Open @BotFather on Telegram and send '/newapp' command to create your web app and select your Telegram bot.
Enter a Title for the web app.
Enter a Short description for the web app.
Upload a photo, 640x360 pixels.
Upload a demo GIF or send '/empty' to skip this step.
Add {{panelUrl}}/app as a Web App URL.
Enter a Short name of the app.
To enable web app:
- Send '/mybots' command in @BotFather chat and select your Telegram bot from the list.
- Click on Bot Settings → Configure Mini App → Enable Mini App.
- Enter {{panelUrl}}/app as an Mini App URL.