I ran into the same problem with syntthing. Instead or setting up a phone at home all the time I setup a docker container on a small VPS I use for other things.

I ran into the same problem with syntthing. Instead or setting up a phone at home all the time I setup a docker container on a small VPS I use for other things. Rclone mount of my hetzer nextcloud instance and syncthing together had things running in no time. It's not ideal to use webdav for the mount but it hasn't had any problems.