Sending of emails not working (when user logged in)

I have an issue with the emails sending - either are being sent to admin nor user. You can see my settings below. 

This is a completely fresh install of WP 5.1 and WPSQT 3.5.1

I have ensured that emails can send by installing a contact form and WP SMTP and I get emails just fine when sent from the contact form. 

Whats going on? If you would like a login to this site to test, please email on the address in the screen shots. 

![WPSQT Options](https://f.cloud.github.com/assets/1452480/96379/bfb89a28-66a7-11e2-9f5e-61957976794f.png)
![WPSQT Quiz Settings](https://f.cloud.github.com/assets/1452480/96380/bfed3094-66a7-11e2-9e30-3fc83af01c56.png)