One of the reasons Regrann stops working is Cleaner and booster apps such as Clean Master or CCleaner.
These tools close apps to increase phone speed or to minimize battery consumption.
If you are using cleaner or booster apps, make sure to add Regrann to the Ignore list of these apps.
If you are not using such apps, Regrann is being closed by the phone’s OS; stopping background processes during standby mode or on low battery.
The latest release of Regrann has a new mechanism to minimize this. Please update and let us know if you are still experiencing this problem.
We would love to hear from you on this subject.