I appreciate there are a number of threads on this subject but none seem to address my problem.

I am using Skydemon on iPad mini with Dual XGPS150E external gps receiver.  I have not had it up in the aircraft yet but have been checking it out in my car.   The Dual app shows a good strong signal with good position data.   However, Skydemon keep putting up a message saying that it is waiting for position data.  Then the position will come back and then drop out again.  Similarly, there is no groundspeed and no heading shown on the screen even when I am doing 60 mph.  Skydemon does correctly say at the top of the screen that I am still on the ground, maybe this is the reason for the other issues.

Is this normal and do I actually have to get airborne for skydemon to work properly?

PS Using V3.2.1.1