Submit button not working

Hi guys,

Love the plugin and will buy the full version if I can get the Submit button working.

I have installed the plugin Configure SMTP and sent a testemail from the setup page and it is working however I am not getting the page returning to the main page when the Submit button is pressed as I configured and secondly there is no submission of the form to the email address I setup from the Form Maker.

https://www.potcholdboys.co.za/events/old-boys-events/free-old-boys-blazer-and-badge/

Please assist.

https://www.ads-software.com/extend/plugins/form-maker/