Notification Usage Permission Keeps Getting Revoked?

The system kills background processes periodically to save battery or RAM. The following settings can minimize the likelihood of background process termination:

If the notification access permission switch in auto-start management is already on, but the App indicates the permission is not enabled, please follow the App's indication - turn off and then turn on the notification access permission switch again.

Android 15

Android 15 users should first refer to Hidden Sensitive Notification Content? to ensure granting One Notify the RECEIVE_SENSITIVE_NOTIFICATIONS permission, otherwise message matching may be missed.

Xiaomi

Set power saving policy to unrestricted	Enable service status display and persistent floating window
Enable background running and ignore battery optimization	Enable background running
Set background lock	Set background lock
Enable background hiding

Huawei

Enable background running and ignore battery optimization	Open App Launch Management in Phone Manager
Turn off switch, set to manual management	Set to not allow battery optimization
Pull down background lock	Set background lock
Enable background hiding