Sync stopped working on MAC

Sync is no longer working for me. I tried uninstalling the application, but apparently the data is saved so I can’t start over. Is sync currently working properly for MAC systems?
Is there a way for me to repair the current sync issue or completely start over?

Yes it should be working just fine for mac. To remove any device from the Sync chain, open Brave on it and go to Settings --> Sync --> Managed Synced Devices --> Leave Sync chain. Do this for any devices currently on the chain, then simply create a new Sync chain to try again.