This must be fairly common, but I can't find a solution.
Some apps notifications are not appearing on my phone, the ones I have noticed are Google home & chess.com. I have checked both the Android settings and in-app settings and everything is set to show notifications. Home notifications are coming through on my watch (pixel watch 3), so I think the app is working correctly (I have chess notifications turned off for just my watch). Notifications from both work fine on my tab S10 lite. I have cleared the cache on both apps as well.
Any other suggestions?