The pilot controler has been acting up, every once in a while the Pilot controler doesnt want to connect to the iPad, after a complete shutdown and restart it works. Today no matter what I do it will not connect, Ive tried several USB cables and nothing. When I connect the camera controler and cables to the Pilot iPad it connects.
Any suggestions?

I had to delete the app and reinstall. Lost all my flight data, but it worked.

Please re-install DJI GO and relink  your controllers again

Re-installed the GO App and am still unable to do anything such as re-link. I do believe the USB port on the controller is dead, the batt icon on the iPad does not show "not charging" and I do not get the pop up "Trust this device" Ive also tried several USB to Thunderbolt cables and nothing.
HELP!!

Sorry you lost your data, for future reference, always try to sync your flight records to the cloud after each flight or at least once a week.