First of all you need to pair your adapter with the cell phone, same as with any other bluetooth device. For my optimized adapters the password is: 1234
TripTracker needs to know which car uses which adapter. Therefore you have to assign it to a car. Click here
to see how this can be done.
Unfortunately it is impossible to get the absolute odometer value with OBDII but fortunately it can be calculated from another parameter. Therefore you have to enter your cars current mileage once.
Please uninstall all other OBDII Apps since they may block the connection to the adapter.