Beeline knows which direction to point in by measuring the earth's magnetic field, just like a compass does.
As your bike has its own magnetic field, it is important to calibrate your Beeline to your bike. To calibrate your Beeline, follow the instructions here
If your Beeline is properly calibrated on your bike, and the magnet symbol is showing, this means that there is a magnetic disturbance.
This will usually happen when you are cycling next to a highly magnetic object like a bridge or a tall building. The arrow may briefly appear to point the wrong way but it will correct itself as soon as you have passed the disturbance - just keep cycling!
If you have successfully calibrated your Beeline on your bike, and the magnet symbol isn't showing, please try the following:
1. Updating your app and device. You can check for app updates in the App or Google Play Stores. For device updates, there will be a red notification on the home-screen of the app if you have an update to install.
You can also manually check for updates by going into the settings menu of your app and clicking on 'firmware version'
2. Checking your Beeline against a real landmark that you can see - for example the end of your road or a tall building nearby. Does your Beeline point straight at it?
3. Calibrating your Beeline in your hand and checking it against a landmark, to test how it works off your bike
If you still need help please get in touch with us at firstname.lastname@example.org with the results of your findings and we'll get you sorted as quickly as we can!