You are stuck at the following screen and your LED doesn't turn green.
This means that your device is not correctly connected. The OBD socket of your vehicle may be defective.
To make sure your it works well, try to connect your device to another vehicle. If the LED turns to green, consult a qualified professional to have an assessment of your OBD socket carried out. If the problem is still the same, contact us at firstname.lastname@example.org!