In this post, we can find basic error messages/general problems and their fixes. This post will be upgraded every time we if find a solution for an issue. You can comment in this post for something that is not yet on the list and we will start searching for a solution:

''Application 13 missing'':
If you log out and log back in you should be good to go.

''device has not been active for 3 days'':
log in/out and calibrating the device

The battery is draning fast (even when not in use):
Battery life fix (see update subtopic)

Android phones require having the Bluetooth and location switched on
iPhones require having the Bluetooth switched on