Dear Aviators,
I tried the trial version and was very happy with Sky Demon. It worked fine. This morning I bought the full version and went flying. I just saw 'Waiting for location data' all the flight. I use an ipad mini. Location services are turned on etc. I also notice my 'Maps with Me' has stopped working too. What has the paid for version done to my ipad that looks like my GPS doesn't work anymore?
Terry

My suggestion would be to reinstall SD and check again. If it still doesn't receive a GPS signal I would check with other software to verify, that the GPS is working at all.