How to fix Testflight "No Builds available" for some users

I have a beta that has worked fine before. This is a build not a new app. I have the following in the testflight UI. I have removed and re-added the testers group. I have removed and re-added the tester to the group. I have created another build completely. As you can see there are users that I could resend the invite to but two that are left hanging.

How can I fix this issue? Sadly, the main tester is one of the ones unavailable.

I am going to try the public link but that does not track issues the same way. The public link says the beta is not accepting testers.

Looking under builds from the testers tab:

The issue was the difference between what Apple considers 'internal' testers which are those who have an Apple developer account and those who do not. The latter must wait for Apple to review regardless. And they do it on Apple time. If you get it in less than 30 hours consider yourself blessed by the RNG gods ;) but you should plan for 48 hours to be safe with regard to test team schedules.

Maybe you forget to send build for review before beta as shown in the pictures?

Only after review tester will be able to test app using the public link. Usually, it takes one day.

AND