No E-mails sent out

I have had Boarding working, but since the last updates (when iTunes Connect updated), users will sign up and it will show success, but the e-mail won't be sent to the user asking them to sign up or install TestFlight.

It adds them to the external testers, but no e-mail is sent out.

Any ideas?

Thanks!

The issue names no file, test, or entry point; begin by reproducing the signup flow and tracing the Boarding path that adds external testers and sends the TestFlight invitation. Done means a successful signup results in the expected email, with a regression test or documented reproduction if the repository supports one.

Written by the indexing model from the issue text.