Thank you — I’m getting updates on that Github page too — I really appreciate your efforts.
Sorry for third post on same topic — but… after I did that (what I described above), it worked for me — but then a friend tried it again (the same guy who found the error initially) and it didn’t work for him. Help!
To be clear — it was working fine via desktop web browsers. It was only erroring via iPhone. So when I disabled the Recaptcha requirement, the iPhone signups seems to work again.