Mirror Android => Raspberry (cloud)

[An_Ge]

I use a Pi 4 to connect to a cloud via WebDAV. Works perfectly. The app has this great "backup mode"  (Android device), which also runs like charm.

However, I want to mirror certains folder, i. e. by changing (or deleting) the data origin on my phone, the cloud should be adapted 1:1 (not supposed to be a backup).

I tried a lot but never settings to get it up and running.

Is there any way to do it?

Thanks!