Hi,
You are right, we received your email and replied but I guess it never arrived.
We tested with a Gmail account and the delivery was successful. It looks like the emails are blocked if you have a domain account with them.
I would suggest using a different email address for now.
Also, please send me a PM if you would like to change the registered email address and disable the two-step authentication until the change goes through.
Regards,
Marius