Internal Tester Limit Confusion

In our app, we are seeing a warning that we have reached the maximum number of internal testers. However, when I look at the list of internal testers, it is only showing 65. Has anyone else run into this before and is there a way to find the other testers that are taking up the 100?

It has been a while but we are still seeing the same issue. Even when removing a tester, the message that we have reached the limit remains.

Internal Tester Limit Confusion
 
 
Q