Something knocked out sync on all my devices

I have sync enabled on multiple linux installs, windows installs, my iphone, mobile tablet. I installed a linux on a new machine, installed Brave first-thing, went to sync and clicked I have a sync code. Pulled out my phone and went to sync settings. It acted like I was no longer synced. Started pulling up other devices. They are all acting like sync has never been enabled, almost like my entire sync chain has been erased. Is there something wrong with the sync system or just my account? Trying to rebuild the sync chain on all my devices now.

@Finster

Good places (and good help: @Saoiray) to find and study Brave Sync info: