Huh, i just use it with a local directory but I jist checked and could easily select a share from rcx app, so whatever you use for webdav access will also work.
Ps. If you dont use Nextcloud yet, don’t, it’s so slow I can’t imagine how many hours it will take to load a sticker pack, several seconds per file
And the RestartSomethingInterval=0 option so systemd keeps restarting the program like an obedient machine it should be, not give up because it’s tired