I've already figured out how to resolve the Tapatalk notifications issue.
The problem is caused by the battery management settings.
I resolved with the following steps:
- Settings> Applications> Application Management
- Select tapatalk
- Clear the app's cache
- Clear all app data
- Uninstall tapatalk
- Settings> Applications> Application Management
- Select Battery
- Clear the app's cache
- Clear all app data
- Open the playstore and install tapatalk (do not open the app)
- Settings> Applications> Application Management
- Select tapatalk
- When saving battery, select without restrictions.
Tapatalk can now be opened and notifications are working.
Enviado do meu Mi 10 através do Tapatalk