The app persistently refuses to open, you should uninstall the app and re-download it.

Android uninstall; open up settings (⚙️) go to applications/app manager, go to Moocall, force stop, and then uninstall

IPhone Uninstall; Settings -> General -> Usage -> Manage Storage -> Moocall -> Delete

To reinstall it go to the Google play store on Android and the App store on iOS/iPhone

If this doesn't help fix the problem, give our team a call on one of the following numbers:

IRL 01 969 6038
UK 0203 627 1126
US  1-800-657-4291
France +33 09 70 73 43 77
Germany +49 3222 109/5533
Norway +47 23 96 26 55
ROW +353 1 96 96 038