Cannot create a new sub-user

Whenever I try to set up a new sub-user, the email never goes through to that person.

example: 

tschastain3@gmail.com

We've tried both her work and personal email, and she never gets anything.  Please help!

I checked the mail log of the email you provided but I was not able to find any mail log of the mentioned email address: tschastain3@gmail.com. 

As per checking your account, I was able to confirm that you have added the email as your sub-user.

Can you try to re-add the sub-user (delete the sub-user and add again) and see if the sub-user will now receive the invitation email? If the sub-user still was not able to receive the email, the user can still register to JotForm using this link: https://www.jotform.com/signup?email=tschastain3@gmail.com. 

I've tried that before with this same user with nothing different.  We're about to add a few users and wanted to make sure this was cleared up before we began.

I checked again the mail log of the email (tschastain3@gmail.com) and the invitation email is now recorded on our log.

It might be a temporary issue but it seems to be working now. I was also able to see that the user has already an account in JotForm.