Folders automatically deleted by NextCloud

Nextcloud version: Nextcloud Hub 3 (25.0.3)
Operating system and version: Windwos 11, MacOS Ventura 13.1, Ubuntu 22.04.1

The issue you are facing:

Automatically deleted folders and files, only talk folder remains

Is this the first time you’ve seen this error? (Y/N): Since 2 weeks about

Steps to replicate it:

Nothing perticular to do. Each time I restore the deleted folders and one or two hours later I have messages in my client app that I deleted, retored, redeleted files and files, again and again. Only the talk folder remain synchronized, all other folders are deleted automatically.

I’m not administrating my nexcloud, it is my Internet provider that gave me nextcloud support in my subscription.