No Sync on Mac

since a couple of days Rush on my Macbook Pro doesn't sync while the ipads and phones do. Even the projects being synced before do not show anymore as synced and I cant seem to activate syncing, all I get is a non-sense message not helping with anything. I do not have the Rush subscription for a long time, am a long time PS and LR user, but Rush is such a mess, it it just keep stealing my time. Sorry Adobe, that's bad work.