Pro Site new site email not sent

When a user signs up for a new wordpress site and account, they are not sent an email with their password. You can easily replicate this by going to diamondmaker.website and creating a new account. I've been trying to resolve this for a few days now and can't find any settings that may affect this. I'm also at a loss as to how to troubleshoot this. If the admin creates a new site the email is generated and sent without an issue. I've been sure to check all spam folders etc...