Android 7.1.2 Folders seem to be write prodected

I want to sync a subfolder (Vroni) from folder photo on synology

to the picture folder on Android Tablet

but I get

on the Android Tablet in Syncthing Folder Tab Is written:

Files on This devise are writeprotected…

How-To fix This??

I don’t understand: The screenshot doesn’t seem to come from android, at least I have never seen /volume1/... paths there - where’s the problem, on android or synology?

In any case it’s a permission problem which is something you need to figure out at the OS level. If it’s android, it might just be a path where Syncthing does not have access (because of android restrictions), if it’s synology it’s complicated but possible (search the forum, tons of threads on the topic).