Does anyone have a jailbroken iPhone and is able to use the DJI Go app?

Yes, works fine

Yes, Well from what I've experienced so far have only had the drone for 2 weeks but so far no issues at all

What version do you have? Maybe it's a tweak interfering. But I am unable to connect my phone. iPhone 6 plus 8.3

Do you have the Cydia tweak called 'Upscale' installed? That may cause render issues with the video feed.