If you're still having GPS problems on Android despite all the GPS troubleshooting tips, here are a few more tips that might help you out:
Restart your phone
It is recommended to restart your phone every now and then to resolve any issues with apps.
Delete and reinstall
Delete and reinstall the BikerSOS app in the Google Playstore. Please make sure in advance that all your tours and data are saved correctly, as the history of your tours on your phone will be deleted.
Activate and deactivate the "flight mode". In some cases, this can re-enable the GPS signal.
Open Google Maps and then the BikerSOS app for a few moments to find the GPS signal again.