Regarding the operation of the tracker, it is best for you to directly contact its manufacturer or seller. They are the ones who have the most complete expertise in this matter.
There may be several reasons for this situation.
We first of all recommend that you check that the tracker is connected correctly, that all wires, etc. are in working order, that the power source is actually supplying power, whether the voltage level of the power source corresponds to what is required for the tracker, etc.