Why no GPS/no online connection?

There can be various reasons such as: 

• The signal can be blocked if the vehicle is indoors, for example, in a garage or parking garage. This can block the signal. 
• Metal parts can obstruct the tracker's signal.
• The tracker has no power. Check whether the fixed 12V/24V voltage has been used. 
• If the tracker shows red, it could also mean that the tracker is functional but has been stationary for longer than 5 minutes or is in sleep mode. Check if the last location is correct.