I have somehow been removed from testing my app on TestFlight

In my Testflight app on my iPhone I have somehow been removed from testing my app on TestFlight even though I am listed as an internal tester in TF Cpanel. I changed nothing. What happened? How can I fix this?

out of about 10 testers, only 1 was ever able to get internal testing to work. it was working for myself up until recently and it seems completely impossible to add myself to internal testing again.

I have somehow been removed from testing my app on TestFlight
 
 
Q