I have a solution here:Download 3uTools on your pc
Go to the apps store in 3uTools and search TestFlight
Download that and it will automatically install in your iphone or any device your using
If it says it's not compatible ...don't worry
Just go to the Apps store in your phone and go to the purchased section
When you press install it will ask you if you want to download the latest compatible version
Agree to that and....Voila
You got your TestFlight
AmalManel
Users receive reputation points by contributing quality content to the forums.
Posts include post and replies published on the forums.
Post authors can mark replies as Accepted to indicate successful solutions.
Apple Developer Forums admins can mark replies as Apple Recommended to indicate an approved solution