diff --git a/package.json b/package.json
index 1bd381d26c..f8d94e2d21 100644
--- a/package.json
+++ b/package.json
@@ -80,7 +80,7 @@
     "linkifyjs": "^2.1.9",
     "lodash": "^4.17.20",
     "matrix-js-sdk": "github:matrix-org/matrix-js-sdk#develop",
-    "matrix-widget-api": "^0.1.0-beta.13",
+    "matrix-widget-api": "^0.1.0-beta.14",
     "minimist": "^1.2.5",
     "opus-recorder": "^8.0.3",
     "pako": "^2.0.3",
diff --git a/src/components/views/dialogs/ModalWidgetDialog.tsx b/src/components/views/dialogs/ModalWidgetDialog.tsx
index 59eaab7b81..0c474b160c 100644
--- a/src/components/views/dialogs/ModalWidgetDialog.tsx
+++ b/src/components/views/dialogs/ModalWidgetDialog.tsx
@@ -1,5 +1,5 @@
 /*
-Copyright 2020 The Matrix.org Foundation C.I.C.
+Copyright 2020, 2021 The Matrix.org Foundation C.I.C.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
@@ -16,7 +16,7 @@ limitations under the License.
 
 import * as React from 'react';
 import BaseDialog from './BaseDialog';
-import { _t } from '../../../languageHandler';
+import { _t, getUserLanguage } from '../../../languageHandler';
 import AccessibleButton from "../elements/AccessibleButton";
 import {
     ClientWidgetApi,
@@ -39,6 +39,8 @@ import {OwnProfileStore} from "../../../stores/OwnProfileStore";
 import { arrayFastClone } from "../../../utils/arrays";
 import { ElementWidget } from "../../../stores/widgets/StopGapWidget";
 import {replaceableComponent} from "../../../utils/replaceableComponent";
+import {ELEMENT_CLIENT_ID} from "../../../identifiers";
+import SettingsStore from "../../../settings/SettingsStore";
 
 interface IProps {
     widgetDefinition: IModalWidgetOpenRequestData;
@@ -129,6 +131,9 @@ export default class ModalWidgetDialog extends React.PureComponent<IProps, IStat
             currentUserId: MatrixClientPeg.get().getUserId(),
             userDisplayName: OwnProfileStore.instance.displayName,
             userHttpAvatarUrl: OwnProfileStore.instance.getHttpAvatarUrl(),
+            clientId: ELEMENT_CLIENT_ID,
+            clientTheme: SettingsStore.getValue("theme"),
+            clientLanguage: getUserLanguage(),
         });
 
         const parsed = new URL(templated);
diff --git a/src/components/views/elements/LanguageDropdown.js b/src/components/views/elements/LanguageDropdown.js
index b8734c5afb..9420061a74 100644
--- a/src/components/views/elements/LanguageDropdown.js
+++ b/src/components/views/elements/LanguageDropdown.js
@@ -58,13 +58,8 @@ export default class LanguageDropdown extends React.Component {
             // If no value is given, we start with the first
             // country selected, but our parent component
             // doesn't know this, therefore we do this.
-            const language = SettingsStore.getValue("language", null, /*excludeDefault:*/true);
-            if (language) {
-                this.props.onOptionChange(language);
-            } else {
-                const language = languageHandler.normalizeLanguageKey(languageHandler.getLanguageFromBrowser());
-                this.props.onOptionChange(language);
-            }
+            const language = languageHandler.getUserLanguage();
+            this.props.onOptionChange(language);
         }
     }
 
diff --git a/src/identifiers.ts b/src/identifiers.ts
new file mode 100644
index 0000000000..cc8b2fee4d
--- /dev/null
+++ b/src/identifiers.ts
@@ -0,0 +1,17 @@
+/*
+ * Copyright 2021 The Matrix.org Foundation C.I.C.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *         http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+export const ELEMENT_CLIENT_ID = "io.element.web";
diff --git a/src/languageHandler.tsx b/src/languageHandler.tsx
index b61f57d4b3..f30e735f03 100644
--- a/src/languageHandler.tsx
+++ b/src/languageHandler.tsx
@@ -56,6 +56,15 @@ export function newTranslatableError(message: string) {
     return error;
 }
 
+export function getUserLanguage(): string {
+    const language = SettingsStore.getValue("language", null, /*excludeDefault:*/true);
+    if (language) {
+        return language;
+    } else {
+        return normalizeLanguageKey(getLanguageFromBrowser());
+    }
+}
+
 // Function which only purpose is to mark that a string is translatable
 // Does not actually do anything. It's helpful for automatic extraction of translatable strings
 export function _td(s: string): string {
diff --git a/src/stores/widgets/StopGapWidget.ts b/src/stores/widgets/StopGapWidget.ts
index 17371d6d45..84cf35aeb4 100644
--- a/src/stores/widgets/StopGapWidget.ts
+++ b/src/stores/widgets/StopGapWidget.ts
@@ -1,5 +1,5 @@
 /*
- * Copyright 2020 The Matrix.org Foundation C.I.C.
+ * Copyright 2020, 2021 The Matrix.org Foundation C.I.C.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -52,6 +52,8 @@ import {getCustomTheme} from "../../theme";
 import CountlyAnalytics from "../../CountlyAnalytics";
 import { ElementWidgetCapabilities } from "./ElementWidgetCapabilities";
 import { MatrixEvent } from "matrix-js-sdk/src/models/event";
+import { ELEMENT_CLIENT_ID } from "../../identifiers";
+import { getUserLanguage } from "../../languageHandler";
 
 // TODO: Destroy all of this code
 
@@ -194,6 +196,9 @@ export class StopGapWidget extends EventEmitter {
             currentUserId: MatrixClientPeg.get().getUserId(),
             userDisplayName: OwnProfileStore.instance.displayName,
             userHttpAvatarUrl: OwnProfileStore.instance.getHttpAvatarUrl(),
+            clientId: ELEMENT_CLIENT_ID,
+            clientTheme: SettingsStore.getValue("theme"),
+            clientLanguage: getUserLanguage(),
         }, opts?.asPopout);
 
         const parsed = new URL(templated);
diff --git a/yarn.lock b/yarn.lock
index 1a3b746727..19c0646d32 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -5704,10 +5704,10 @@ matrix-react-test-utils@^0.2.2:
     "@babel/traverse" "^7.13.17"
     walk "^2.3.14"
 
-matrix-widget-api@^0.1.0-beta.13:
-  version "0.1.0-beta.13"
-  resolved "https://registry.yarnpkg.com/matrix-widget-api/-/matrix-widget-api-0.1.0-beta.13.tgz#ebddc83eaef39bbb87b621a02a35902e1a29b9ef"
-  integrity sha512-DJAvuX2E7gxc/a9rtJPDh17ba9xGIOAoBHcWirNTN3KGodzsrZ+Ns+M/BREFWMwGS5yEBZko5eq7uhXStEbnyQ==
+matrix-widget-api@^0.1.0-beta.14:
+  version "0.1.0-beta.14"
+  resolved "https://registry.yarnpkg.com/matrix-widget-api/-/matrix-widget-api-0.1.0-beta.14.tgz#e38beed71c5ebd62c1ac1d79ef262d7150b42c70"
+  integrity sha512-5tC6LO1vCblKg/Hfzf5U1eHPz1nHUZIobAm3gkEKV5vpYPgRpr8KdkLiGB78VZid0tB17CVtAb4VKI8CQ3lhAQ==
   dependencies:
     "@types/events" "^3.0.0"
     events "^3.2.0"