Appreciate you letting me know! I just signed up a new dummy account and it seems to have worked. But no one else has gotten an email in the last 2 hours from what I can see. But at the moment its hard to tell if there is an issue or just, no one has signed up in the last two hours. It looks like a need to double check my monitoring setup to see if I can catch this.

Give it another shot, it worked for me just now (same deployment). If you can, have your network tab open and let me know if you see any failures. I'll try to make sure I can see that easier.