Hello,
Thank you for posting and sorry to hear about the email issues. I recommend installing a plugin such as Easy WP SMTP to help ensure emails get delivered correctly.
There are a multitude of reasons the emails aren’t getting delivered, from your server to a potential theme and/or plugin conflict. If that plugin doesn’t do the trick, try it out with the default WP theme active in addition to TEC, PRO, and Community Events. This will eliminate the potential for a theme and/or plugin conflict as we don’t support conflicts for code not written/maintained by us. Please see our What support is provided for license holders? Knowledgebase for more info.
Please keep me updated on the status of your issue and thanks again. Cheers!