diff --git a/web/src/App.js b/web/src/App.js
index 74e3b099..0bd9297e 100644
--- a/web/src/App.js
+++ b/web/src/App.js
@@ -84,8 +84,8 @@ class App extends Component {
       uri: null,
       menuVisible: false,
       themeAlgorithm: ["default"],
-      themeData: Setting.ThemeDefault,
-      logo: this.getLogo(Setting.getAlgorithmNames(Setting.ThemeDefault)),
+      themeData: Conf.ThemeDefault,
+      logo: this.getLogo(Setting.getAlgorithmNames(Conf.ThemeDefault)),
     };
 
     Setting.initServerUrl();
diff --git a/web/src/ApplicationEditPage.js b/web/src/ApplicationEditPage.js
index e9d3b274..0faf856b 100644
--- a/web/src/ApplicationEditPage.js
+++ b/web/src/ApplicationEditPage.js
@@ -18,6 +18,7 @@ import {CopyOutlined, LinkOutlined, UploadOutlined} from "@ant-design/icons";
 import * as ApplicationBackend from "./backend/ApplicationBackend";
 import * as CertBackend from "./backend/CertBackend";
 import * as Setting from "./Setting";
+import * as Conf from "./Conf";
 import * as ProviderBackend from "./backend/ProviderBackend";
 import * as OrganizationBackend from "./backend/OrganizationBackend";
 import * as ResourceBackend from "./backend/ResourceBackend";
@@ -717,7 +718,7 @@ class ApplicationEditPage extends React.Component {
           <Col span={22} style={{marginTop: "5px"}}>
             <Row>
               <Radio.Group value={this.state.application.themeData?.isEnabled ?? false} onChange={e => {
-                const {_, ...theme} = this.state.application.themeData ?? {...Setting.ThemeDefault, isEnabled: false};
+                const {_, ...theme} = this.state.application.themeData ?? {...Conf.ThemeDefault, isEnabled: false};
                 this.updateApplicationField("themeData", {...theme, isEnabled: e.target.value});
               }} >
                 <Radio.Button value={false}>{i18next.t("application:Follow organization theme")}</Radio.Button>
@@ -728,7 +729,7 @@ class ApplicationEditPage extends React.Component {
               this.state.application.themeData?.isEnabled ?
                 <Row style={{marginTop: "20px"}}>
                   <ThemeEditor themeData={this.state.application.themeData} onThemeChange={(_, nextThemeData) => {
-                    const {isEnabled} = this.state.application.themeData ?? {...Setting.ThemeDefault, isEnabled: false};
+                    const {isEnabled} = this.state.application.themeData ?? {...Conf.ThemeDefault, isEnabled: false};
                     this.updateApplicationField("themeData", {...nextThemeData, isEnabled});
                   }} />
                 </Row> : null
@@ -764,7 +765,7 @@ class ApplicationEditPage extends React.Component {
   }
 
   renderSignupSigninPreview() {
-    const themeData = this.state.application.themeData ?? Setting.ThemeDefault;
+    const themeData = this.state.application.themeData ?? Conf.ThemeDefault;
     let signUpUrl = `/signup/${this.state.application.name}`;
     const signInUrl = `/login/oauth/authorize?client_id=${this.state.application.clientId}&response_type=code&redirect_uri=${this.state.application.redirectUris[0]}&scope=read&state=casdoor`;
     const maskStyle = {position: "absolute", top: "0px", left: "0px", zIndex: 10, height: "97%", width: "100%", background: "rgba(0,0,0,0.4)"};
@@ -835,7 +836,7 @@ class ApplicationEditPage extends React.Component {
   }
 
   renderPromptPreview() {
-    const themeData = this.state.application.themeData ?? Setting.ThemeDefault;
+    const themeData = this.state.application.themeData ?? Conf.ThemeDefault;
     const promptUrl = `/prompt/${this.state.application.name}`;
     const maskStyle = {position: "absolute", top: "0px", left: "0px", zIndex: 10, height: "100%", width: "100%", background: "rgba(0,0,0,0.4)"};
     return (
diff --git a/web/src/Conf.js b/web/src/Conf.js
index 5d57cdfb..80b00c94 100644
--- a/web/src/Conf.js
+++ b/web/src/Conf.js
@@ -17,6 +17,13 @@ export const GithubRepo = "https://github.com/casdoor/casdoor";
 
 export const ForceLanguage = "";
 export const DefaultLanguage = "en";
-export const InitThemeAlgorithm = true;
 
 export const EnableExtraPages = true;
+
+export const InitThemeAlgorithm = true;
+export const ThemeDefault = {
+  themeType: "default",
+  colorPrimary: "#5734d3",
+  borderRadius: 6,
+  isCompact: false,
+};
diff --git a/web/src/EntryPage.js b/web/src/EntryPage.js
index f6e8139e..b3a04c22 100644
--- a/web/src/EntryPage.js
+++ b/web/src/EntryPage.js
@@ -17,6 +17,7 @@ import {Redirect, Route, Switch} from "react-router-dom";
 import {Spin} from "antd";
 import i18next from "i18next";
 import * as Setting from "./Setting";
+import * as Conf from "./Conf";
 import SignupPage from "./auth/SignupPage";
 import SelfLoginPage from "./auth/SelfLoginPage";
 import LoginPage from "./auth/LoginPage";
@@ -62,7 +63,7 @@ class EntryPage extends React.Component {
         application: application,
       });
 
-      const themeData = application !== null ? Setting.getThemeData(application.organizationObj, application) : Setting.ThemeDefault;
+      const themeData = application !== null ? Setting.getThemeData(application.organizationObj, application) : Conf.ThemeDefault;
       this.props.updataThemeData(themeData);
     };
 
diff --git a/web/src/OrganizationEditPage.js b/web/src/OrganizationEditPage.js
index 6ab38972..87495d92 100644
--- a/web/src/OrganizationEditPage.js
+++ b/web/src/OrganizationEditPage.js
@@ -18,6 +18,7 @@ import * as OrganizationBackend from "./backend/OrganizationBackend";
 import * as ApplicationBackend from "./backend/ApplicationBackend";
 import * as LdapBackend from "./backend/LdapBackend";
 import * as Setting from "./Setting";
+import * as Conf from "./Conf";
 import i18next from "i18next";
 import {LinkOutlined} from "@ant-design/icons";
 import LdapTable from "./LdapTable";
@@ -324,7 +325,7 @@ class OrganizationEditPage extends React.Component {
           <Col span={22} style={{marginTop: "5px"}}>
             <Row>
               <Radio.Group value={this.state.organization.themeData?.isEnabled ?? false} onChange={e => {
-                const {_, ...theme} = this.state.organization.themeData ?? {...Setting.ThemeDefault, isEnabled: false};
+                const {_, ...theme} = this.state.organization.themeData ?? {...Conf.ThemeDefault, isEnabled: false};
                 this.updateOrganizationField("themeData", {...theme, isEnabled: e.target.value});
               }} >
                 <Radio.Button value={false}>{i18next.t("organization:Follow global theme")}</Radio.Button>
@@ -335,7 +336,7 @@ class OrganizationEditPage extends React.Component {
               this.state.organization.themeData?.isEnabled ?
                 <Row style={{marginTop: "20px"}}>
                   <ThemeEditor themeData={this.state.organization.themeData} onThemeChange={(_, nextThemeData) => {
-                    const {isEnabled} = this.state.organization.themeData ?? {...Setting.ThemeDefault, isEnabled: false};
+                    const {isEnabled} = this.state.organization.themeData ?? {...Conf.ThemeDefault, isEnabled: false};
                     this.updateOrganizationField("themeData", {...nextThemeData, isEnabled});
                   }} />
                 </Row> : null
diff --git a/web/src/ResetModal.js b/web/src/ResetModal.js
index 48780e66..9bab365a 100644
--- a/web/src/ResetModal.js
+++ b/web/src/ResetModal.js
@@ -17,7 +17,7 @@ import i18next from "i18next";
 import React from "react";
 import * as Setting from "./Setting";
 import * as UserBackend from "./backend/UserBackend";
-import {CountDownInput} from "./common/CountDownInput";
+import {SendCodeInput} from "./common/SendCodeInput";
 import {MailOutlined, PhoneOutlined} from "@ant-design/icons";
 
 export const ResetModal = (props) => {
@@ -93,7 +93,7 @@ export const ResetModal = (props) => {
             />
           </Row>
           <Row style={{width: "100%", marginBottom: "20px"}}>
-            <CountDownInput
+            <SendCodeInput
               textBefore={i18next.t("code:Code You Received")}
               onChange={setCode}
               method={"reset"}
diff --git a/web/src/SelectLanguageBox.js b/web/src/SelectLanguageBox.js
index c63590e9..b846a350 100644
--- a/web/src/SelectLanguageBox.js
+++ b/web/src/SelectLanguageBox.js
@@ -18,6 +18,16 @@ import {Dropdown} from "antd";
 import "./App.less";
 import {GlobalOutlined} from "@ant-design/icons";
 
+export const Countries = [{label: "English", key: "en", country: "US", alt: "English"},
+  {label: "简体中文", key: "zh", country: "CN", alt: "简体中文"},
+  {label: "Español", key: "es", country: "ES", alt: "Español"},
+  {label: "Français", key: "fr", country: "FR", alt: "Français"},
+  {label: "Deutsch", key: "de", country: "DE", alt: "Deutsch"},
+  {label: "日本語", key: "ja", country: "JP", alt: "日本語"},
+  {label: "한국어", key: "ko", country: "KR", alt: "한국어"},
+  {label: "Русский", key: "ru", country: "RU", alt: "Русский"},
+];
+
 function flagIcon(country, alt) {
   return (
     <img width={24} alt={alt} src={`${Setting.StaticBaseUrl}/flag-icons/${country}.svg`} />
@@ -32,12 +42,12 @@ class SelectLanguageBox extends React.Component {
       languages: props.languages ?? ["en", "zh", "es", "fr", "de", "ja", "ko", "ru"],
     };
 
-    Setting.Countries.forEach((country) => {
+    Countries.forEach((country) => {
       new Image().src = `${Setting.StaticBaseUrl}/flag-icons/${country.country}.svg`;
     });
   }
 
-  items = Setting.Countries.map((country) => Setting.getItem(country.label, country.key, flagIcon(country.country, country.alt)));
+  items = Countries.map((country) => Setting.getItem(country.label, country.key, flagIcon(country.country, country.alt)));
 
   getOrganizationLanguages(languages) {
     const select = [];
diff --git a/web/src/SelectRegionBox.js b/web/src/SelectRegionBox.js
index 8f1a2ffa..077f603a 100644
--- a/web/src/SelectRegionBox.js
+++ b/web/src/SelectRegionBox.js
@@ -49,8 +49,8 @@ class SelectRegionBox extends React.Component {
         }
       >
         {
-          Setting.CountryRegionData.map((item, index) => (
-            <Option key={index} value={item.code} label={`${item.name} (${item.code})`} >
+          Setting.getCountryNames().map((item) => (
+            <Option key={item.code} value={item.code} label={`${item.name} (${item.code})`} >
               <img src={`${Setting.StaticBaseUrl}/flag-icons/${item.code}.svg`} alt={item.name} height={20} style={{marginRight: 10}} />
               {`${item.name} (${item.code})`}
             </Option>
diff --git a/web/src/Setting.js b/web/src/Setting.js
index ad00f33d..a11baef9 100644
--- a/web/src/Setting.js
+++ b/web/src/Setting.js
@@ -30,33 +30,13 @@ export const ServerUrl = "";
 // export const StaticBaseUrl = "https://cdn.jsdelivr.net/gh/casbin/static";
 export const StaticBaseUrl = "https://cdn.casbin.org";
 
-// https://catamphetamine.gitlab.io/country-flag-icons/3x2/index.html
-export const CountryRegionData = getCountryRegionData();
-
-export const Countries = [{label: "English", key: "en", country: "US", alt: "English"},
-  {label: "简体中文", key: "zh", country: "CN", alt: "简体中文"},
-  {label: "Español", key: "es", country: "ES", alt: "Español"},
-  {label: "Français", key: "fr", country: "FR", alt: "Français"},
-  {label: "Deutsch", key: "de", country: "DE", alt: "Deutsch"},
-  {label: "日本語", key: "ja", country: "JP", alt: "日本語"},
-  {label: "한국어", key: "ko", country: "KR", alt: "한국어"},
-  {label: "Русский", key: "ru", country: "RU", alt: "Русский"},
-];
-
-export const ThemeDefault = {
-  themeType: "default",
-  colorPrimary: "#5734d3",
-  borderRadius: 6,
-  isCompact: false,
-};
-
 export function getThemeData(organization, application) {
   if (application?.themeData?.isEnabled) {
     return application.themeData;
   } else if (organization?.themeData?.isEnabled) {
     return organization.themeData;
   } else {
-    return ThemeDefault;
+    return Conf.ThemeDefault;
   }
 }
 
@@ -208,18 +188,18 @@ export const OtherProviderInfo = {
   },
 };
 
-export function getCountryRegionData() {
-  let language = i18next.language;
-  if (language === null || language === "null") {
-    language = Conf.DefaultLanguage;
-  }
-
+export function getCountriesData() {
   const countries = require("i18n-iso-countries");
-  countries.registerLocale(require("i18n-iso-countries/langs/" + language + ".json"));
-  const data = countries.getNames(language, {select: "official"});
-  const result = [];
-  for (const i in data) {result.push({code: i, name: data[i]});}
-  return result;
+  countries.registerLocale(require("i18n-iso-countries/langs/" + getLanguage() + ".json"));
+  return countries;
+}
+
+export function getCountryNames() {
+  const data = getCountriesData().getNames(getLanguage(), {select: "official"});
+
+  return Object.entries(data).map(items => {
+    return {code: items[0], name: items[1]};
+  });
 }
 
 export function initServerUrl() {
@@ -702,7 +682,7 @@ export function getLanguageText(text) {
 }
 
 export function getLanguage() {
-  return i18next.language;
+  return i18next.language ?? Conf.DefaultLanguage;
 }
 
 export function setLanguage(language) {
diff --git a/web/src/UserListPage.js b/web/src/UserListPage.js
index 69fe8820..e01714ad 100644
--- a/web/src/UserListPage.js
+++ b/web/src/UserListPage.js
@@ -135,13 +135,6 @@ class UserListPage extends BaseListPage {
   }
 
   renderTable(users) {
-    // transfer country code to name based on selected language
-    const countries = require("i18n-iso-countries");
-    countries.registerLocale(require("i18n-iso-countries/langs/" + i18next.language + ".json"));
-    for (const index in users) {
-      users[index].region = countries.getName(users[index].region, i18next.language, {select: "official"});
-    }
-
     const columns = [
       {
         title: i18next.t("general:Organization"),
@@ -267,6 +260,9 @@ class UserListPage extends BaseListPage {
         width: "140px",
         sorter: true,
         ...this.getColumnSearchProps("region"),
+        render: (text, record, index) => {
+          return Setting.getCountriesData().getName(record.region, Setting.getLanguage(), {select: "official"});
+        },
       },
       {
         title: i18next.t("user:Tag"),
diff --git a/web/src/auth/ForgetPage.js b/web/src/auth/ForgetPage.js
index 5d977b18..a20a7d85 100644
--- a/web/src/auth/ForgetPage.js
+++ b/web/src/auth/ForgetPage.js
@@ -19,7 +19,7 @@ import * as ApplicationBackend from "../backend/ApplicationBackend";
 import * as Util from "./Util";
 import * as Setting from "../Setting";
 import i18next from "i18next";
-import {CountDownInput} from "../common/CountDownInput";
+import {SendCodeInput} from "../common/SendCodeInput";
 import * as UserBackend from "../backend/UserBackend";
 import {CheckCircleOutlined, KeyOutlined, LockOutlined, SolutionOutlined, UserOutlined} from "@ant-design/icons";
 import CustomGithubCorner from "../CustomGithubCorner";
@@ -350,14 +350,14 @@ class ForgetPage extends React.Component {
             ]}
           >
             {this.state.verifyType === "email" ? (
-              <CountDownInput
+              <SendCodeInput
                 disabled={this.state.username === "" || this.state.verifyType === ""}
                 method={"forget"}
                 onButtonClickArgs={[this.state.email, "email", Setting.getApplicationName(this.getApplicationObj()), this.state.name]}
                 application={application}
               />
             ) : (
-              <CountDownInput
+              <SendCodeInput
                 disabled={this.state.username === "" || this.state.verifyType === ""}
                 method={"forget"}
                 onButtonClickArgs={[this.state.phone, "phone", Setting.getApplicationName(this.getApplicationObj()), this.state.name]}
diff --git a/web/src/auth/LoginPage.js b/web/src/auth/LoginPage.js
index 46415137..f2817928 100644
--- a/web/src/auth/LoginPage.js
+++ b/web/src/auth/LoginPage.js
@@ -26,7 +26,7 @@ import * as Setting from "../Setting";
 import SelfLoginButton from "./SelfLoginButton";
 import i18next from "i18next";
 import CustomGithubCorner from "../CustomGithubCorner";
-import {CountDownInput} from "../common/CountDownInput";
+import {SendCodeInput} from "../common/SendCodeInput";
 import SelectLanguageBox from "../SelectLanguageBox";
 import {CaptchaModal} from "../common/CaptchaModal";
 import RedirectForm from "../common/RedirectForm";
@@ -419,7 +419,7 @@ class LoginPage extends React.Component {
                 rules={[
                   {
                     required: true,
-                    message: i18next.t("login:Please input your username, Email or phone!"),
+                    message: i18next.t("login:Please input your Email or Phone!"),
                   },
                   {
                     validator: (_, value) => {
@@ -755,7 +755,7 @@ class LoginPage extends React.Component {
             name="code"
             rules={[{required: true, message: i18next.t("login:Please input your code!")}]}
           >
-            <CountDownInput
+            <SendCodeInput
               disabled={this.state.username?.length === 0 || !this.state.validEmailOrPhone}
               method={"login"}
               onButtonClickArgs={[this.state.username, this.state.validEmail ? "email" : "phone", Setting.getApplicationName(application)]}
diff --git a/web/src/auth/SignupPage.js b/web/src/auth/SignupPage.js
index 20134f98..a8959470 100644
--- a/web/src/auth/SignupPage.js
+++ b/web/src/auth/SignupPage.js
@@ -21,7 +21,7 @@ import i18next from "i18next";
 import * as Util from "./Util";
 import {authConfig} from "./Auth";
 import * as ApplicationBackend from "../backend/ApplicationBackend";
-import {CountDownInput} from "../common/CountDownInput";
+import {SendCodeInput} from "../common/SendCodeInput";
 import SelectRegionBox from "../SelectRegionBox";
 import CustomGithubCorner from "../CustomGithubCorner";
 import SelectLanguageBox from "../SelectLanguageBox";
@@ -365,7 +365,7 @@ class SignupPage extends React.Component {
                 message: i18next.t("code:Please input your verification code!"),
               }]}
             >
-              <CountDownInput
+              <SendCodeInput
                 disabled={!this.state.validEmail}
                 method={"signup"}
                 onButtonClickArgs={[this.state.email, "email", Setting.getApplicationName(application)]}
@@ -419,7 +419,7 @@ class SignupPage extends React.Component {
               },
             ]}
           >
-            <CountDownInput
+            <SendCodeInput
               disabled={!this.state.validPhone}
               method={"signup"}
               onButtonClickArgs={[this.state.phone, "phone", Setting.getApplicationName(application)]}
diff --git a/web/src/backend/UserBackend.js b/web/src/backend/UserBackend.js
index a467a30d..1806ea9c 100644
--- a/web/src/backend/UserBackend.js
+++ b/web/src/backend/UserBackend.js
@@ -109,7 +109,7 @@ export function setPassword(userOwner, userName, oldPassword, newPassword) {
   }).then(res => res.json());
 }
 
-export function sendCode(checkType, checkId, checkKey, method, dest, type, applicationId, checkUser) {
+export function sendCode(checkType, checkId, checkKey, method, dest, type, applicationId, checkUser = "") {
   const formData = new FormData();
   formData.append("checkType", checkType);
   formData.append("checkId", checkId);
diff --git a/web/src/common/CountDownInput.js b/web/src/common/SendCodeInput.js
similarity index 99%
rename from web/src/common/CountDownInput.js
rename to web/src/common/SendCodeInput.js
index 26cfc390..d95bac37 100644
--- a/web/src/common/CountDownInput.js
+++ b/web/src/common/SendCodeInput.js
@@ -21,7 +21,7 @@ import {CaptchaWidget} from "./CaptchaWidget";
 
 const {Search} = Input;
 
-export const CountDownInput = (props) => {
+export const SendCodeInput = (props) => {
   const {disabled, textBefore, onChange, onButtonClickArgs, application, method} = props;
   const [visible, setVisible] = React.useState(false);
   const [key, setKey] = React.useState("");
diff --git a/web/src/common/theme/ThemeEditor.js b/web/src/common/theme/ThemeEditor.js
index 5934e566..11ccb37c 100644
--- a/web/src/common/theme/ThemeEditor.js
+++ b/web/src/common/theme/ThemeEditor.js
@@ -14,14 +14,13 @@
 
 import {Card, ConfigProvider, Form, Layout, Switch, theme} from "antd";
 import ThemePicker from "./ThemePicker";
-import ColorPicker from "./ColorPicker";
+import ColorPicker, {GREEN_COLOR, PINK_COLOR} from "./ColorPicker";
 import RadiusPicker from "./RadiusPicker";
 import * as React from "react";
-import {GREEN_COLOR, PINK_COLOR} from "./ColorPicker";
+import {useEffect} from "react";
 import {Content} from "antd/es/layout/layout";
 import i18next from "i18next";
-import {useEffect} from "react";
-import * as Setting from "../../Setting";
+import * as Conf from "../../Conf";
 
 const ThemesInfo = {
   default: {},
@@ -41,7 +40,7 @@ const ThemesInfo = {
 const onChange = () => {};
 
 export default function ThemeEditor(props) {
-  const themeData = props.themeData ?? Setting.ThemeDefault;
+  const themeData = props.themeData ?? Conf.ThemeDefault;
   const onThemeChange = props.onThemeChange ?? onChange;
 
   const {isCompact, themeType, ...themeToken} = themeData;
@@ -59,7 +58,7 @@ export default function ThemeEditor(props) {
   }, [isLight, isCompact]);
 
   useEffect(() => {
-    const mergedData = Object.assign(Object.assign(Object.assign({}, Setting.ThemeDefault), {themeType}), ThemesInfo[themeType]);
+    const mergedData = Object.assign(Object.assign(Object.assign({}, Conf.ThemeDefault), {themeType}), ThemesInfo[themeType]);
     onThemeChange(null, mergedData);
     form.setFieldsValue(mergedData);
   }, [themeType]);