Can I ask, how many satellites does the app see when you are within your house?
Have you got wifi and location services switched on on your phone? (This may not be relevant but.....)
Whilst I am not in a restriction zone, the app sees 0 sateliites from within my house and with wifi off but location services on, the app thinks it is in mid Atlantic. If I then take the everything outside whilst it is all switched on I get some incredibly long flight traces on the maps lol