Some crash, display issues or matchmaking issues with the App can be resolved on Android devices by using a so-called app cache clear.
It is a little different on every device but generally, it works like that:
- Open the Settings application on your device.
- Head over to Apps Menu.
- Choose Installed Applications.
- Find the Application you want to Clear the App Data of.
- Select it, Move to the Storage Tab.
- Hit Clear App Cache.