Last time (a few weeks ago) I tried rclone with WebDAV. I do what the instructions say, I get a local web site where I can open the empty.hmtl, I do the basic setup, write a tiddler, it says "Saved" and the empty.html is still pristine and never gets written.
The times before that I tried several other ways documented on their web site, but failed with all of them. git? Only GitHub (and GitLab) seem to be supported, not my own git repo. Or SourceHut.
Cloud connectors? Which of the three? I've tried at least one of them, didn't work.