Yeah I've been getting this frigging issue for well over 3 months now, somehow miraculously i got it to work ONCE, now it's back to this crap again.
And all this because of "achievement syncing" which I don't even give a damn about.
I've tried "Clearing the Cache", making sure my VPN is off, restarting Ubisoft Connect, etc. etc. etc.
Went to put in a support ticket, Haaa, yeah right "live chat isn't available right now, please use a different option", exactly 0 different options were listed...
So if anyone else has had this issue and found a fix, please let me know. Till then i'm not gonna waste my time with ubisoft anymore.