AppBlock does not work when I enable ultra power saving mode

Unfortunately, with current technology, we cannot block the ultra power saving mode. Super saving mode (Ultra battery saver) stops apps from working, meaning that it turns off AppBlock and then we can’t block other apps. Some operating systems go against the Android best practices and can cause issues for apps. Sometimes you are able to add exceptions to the saving mode and adding AppBlock to those should stop it from being disabled. 

You can also use the “block device settings” option in Strict Mode to prevent you from enabling ultra power saving mode in settings.