Serious issues (crashing, etc) may require that you remove Grindr and reinstall it from the Play Store on your Android device.
First, open the Settings app on your device.
Tap General, then Apps.
Next, clear the Play Store cache...
1. Open Settings App on your device
2. Tap Applications > Application Manager > Google Play Store
3. Tap Storage
4. Tap on Clear Cache
Lastly, Download a new copy of Grindr from the Play Store and make sure to delete the Grindr app data. To do this follow these steps:
1. Open Settings.
2. Open Application Manager
3. Search Grindr.
4. Open Storage.
5. Press the Clear Data and Clear Cache options.
Restart your device.
Reinstall Grindr from the Play Store on your device.