I think the crux of the request was that they didn't get the email that "each and every creator of a GPT" was apparently supposed to get.

I've created almost a dozen GPTs that I and some others use almost every day, and I didn't get the email either. I think it's reasonable to ask for someone (even a stranger) to forward you a missing email.

Edit: Asked a friend and he didn't get any email either. ¯\_(ツ)_/¯