Error ‘Wrong Server Login or Password’ in OnlyOffice Mobile App with Nextcloud

I’m experiencing an issue when trying to connect my Nextcloud server to the OnlyOffice mobile app. I log in with my username and password, and the server accepts the credentials. However, when I tap ‘Grant Access,’ I get the error message: ‘Wrong server login or password.

I can open and edit documents in OnlyOffice through the Nextcloud web interface without any issues. However, the mobile app fails to connect.

What I’ve Tried:
• Verified username and password.
• Confirmed OnlyOffice integration works via the Nextcloud web interface.
• Ensured HTTPS is enabled and SSL certificates are valid.
• Updated the OnlyOffice mobile app to the latest version.”

Hello @codenamesabir
Please reproduce the situation and record a video file.
Additionally, please specify mobile app version and device’s OS.