What is JotForm?
JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
At JotForm, we want to make sure that you’re getting the online form builder help that you need. Our friendly customer support team is available 24/7.
We believe that if one user has a question, there could be more users who may have the same question. This is why many of our support forum threads are public and available to be searched and viewed. If you’d like help immediately, feel free to search for a similar question, or submit your question or concern.
I checked but I don't see anything from our end that would be blocking them from receiving that email. Also, they are not listed in our bouncelist when I checked their email address.Result: firstname.lastname@example.org is NOT in the bounce list
According to your subuser accounts I found they are listed on your account.
Are you able to have them check their email's spam folder? It may have ended up in there.
Alternatively, you could try removing the email address then reapply it to see if that will help.
Please let us know if you continue to experience a problem with this.