Hi, I recently designed a game that runs perfectly within Buildbox which I exported to Xcode, archived, validated and exported again. I didn't have much luck running the simulator so I uploaded it to iTunes Connect using Application Loader and tried to test it directly on my iPhone using Testflight. The attached screenshot is all that happens. I'm a newbie at this and would greatly appreciate someone to tell me what I'm doing wrong.
can't help without more information. You do know you can test it on your phone without uploading to test flight. Just run it straight from Xcode, with your phone connected to your mac, then you will also get a run log down the bottom, and also it will tell you warnings, which may help in finding your problem. The run log down the bottom will tell you exactly where it stops and why.
I also have some problems with testflight, @playsgames6666 do you ever made a testflight ? i'm not able to made a testflight