Sync error after Change of mobile

[nettzwerg]

Operating system

Android

Joplin version

3.3.5

Sync target

Nextcloud

What issue do you have?

After changing my mobile I cannot sync the new mobile with my nextcloud. The Last Change aome months ago went smooth. At tue Moment I can sync between Desktop, my old device and an Android Tablet without Problems.
Nextcloud ist actual (31.0.4), as the mobile.
I use Joplin from f-droid.
A new Install doesnt Work. Pressing the Test Button in the sync-config-menu says No Problem, No Matter If i use webdav or nextcloud as target...
What Else can I so to geht my mobile working again?
Just found other topics but No solution..thanks for your Help
Christian

Screenshots

[nettzwerg]

Additional Information: sync of onother App (meine Ausgaben) with the Same devices works perfectly

[mrjo118]

Have a look at some of the suggestions I made here:

Sync error on new profile on Android client only: Permission denied to create directory

Another potential solution here: "In the Nextcloud External Storage setting, you have to enable "show hidden files". Then sync each Joplin instance. After syncing each instance, you can disable "show hidden files" and it still syncs fine." And also: "I just had the “403 forbidden” mkcol today and this helped me a lot! I logged on the nextcloud directory, under nextcloud>user>files>desired directory and changed the owner of the directory to “www-data” by using "chown -R www-data:www-data /…

In particular, for your scenario I think it may be that your new device is not able to see the .resources folder to push the default notebook resources to for the initial sync, so maybe of you show hidden files in nextcloud that might resolve it