Went out for a quick flight this afternoon as it warmed up to around -8C and was sunny for a change. Followed my normal start up routine but DJI app would only show aircraft disconnected. I checked my wifi rebooted etc etc but nothing. I then went in and changed from 5 GHZ to 2.4ghz channel 10 and voila the aircraft connected. I turned everything off and tried again and same scenario. After I finished my flight (in 2.4ghz) I opened my controller up thinking maybe a loose wire but again everything seems to checkout. I installed an Arjtek kit a month ago and everything has been working fine until now. Any thoughts?