Notifications are no longer working / Duplicate notifications

[abean]

Hey all,

Samsung S10+. Recently reset to factory. Almost all notifications (Gmail, outlook, hangouts, gvoice, Facebook, etc) do not notify. They all require manual opening and refresh.

Right now only Google messages (sms) appears to work OK.

- Battery mode is set to high performance.
- Have removed sleep settings/optimize battery on all primary apps
- DND is not on (set for night)
- Sync is enabled
- No apps managing battery/sleep
- Wiped cache partition

Also every now and then, I get flooded with duplicate notifications (usually outlook and Facebook messenger).

Not sure how to fix but would really appreciate any support!

Thanks