I split you topic into different thread as it describes completely different behavior as the old thread: "Marked for remote wipe" not working - #9 by wwe
Please complete following tests:
- perform fresh login into account and wait until all files completely arrived on the client
- choose the session for remote wipe
- review if the files are removed
collect server and client long together with times when full sync completed and when you choose remote wipe and when the client logged out.
https://docs.nextcloud.com/desktop/latest/troubleshooting.html#create-debug-archive