Hi i just singned in to my account on the rc and it is asking me to link phone number to complete my registration info , it is asking for a china mainland number but i am in the uk ? had this p4p+ for about three months now and not had this come up before and it won't let me fly !! any ideas?

The only think I can suggest is to uninstall the GO 4 app and reinstall and then log into the app. Make sure you have internet access at the time so that it updates your location.

I would recommend you to connect the network when the GPS signal is good and check again.