M-Files Mobile not working anymore

Hi guys

Since some time we can not access M-Files Mobile anymore (iOS, newest App version). We use Server version 23.2.12340.6.

Furthermore we use https with RPC over HTTP and authenticate with Azure AD. M-Files Web and also the desktop client works fine.

Trying to login with M-Files Mobile, after redirecting to the authentication screen it says HTTP Error 404. The requested resource is not found.

Was there something changed in recent updates?

Our settings:
- Registry settings VaultDNSConfig is set with https:subdomain.domain.ch={VaultID}

- Federated Authentication settings as follows:

The Azure App also contains the necessary redirection URI, such as:

/authentication/AAD.MFGenerated/mobile

/authentication/AAD.MFGenerated/read

/authentication/MFiles.AuthenticationProviders.OAuth/read

/msteamsoauth.html

/webuiintegrator.html

https://wopiservice.m-files.com/api/oauth2/authorize

http://localhost

What is also strange, that classic web is not reachable under https://subdomain.domain.ch/default.aspx, although both web clients are installed and the new web is selected as default client.

Any ideas what is going wrong or missing?

Kind regards

Dario