There is no way to turn off 'resolved error' notifications vs 'new error' notifications. If you are subscribed to get error notifications for a flow, then you will always get both new and resolved error notifications.
To enable/disable notifications, there are 2 ways.
- Each individual user can control this on the 'Notifications' tab within an integration.
- An admin user can manage notifications on behalf of other users from the 'Users' tab within an integration.
Here are some pics to help.

