I am trying to remove / disable MultiSite following here - http://wpmututorials.com/how-to/how-to-disable-multisite/
I am able to successfully disable MultiSite however it breaks the registration system. When I click ‘Complete Sign Up’ the registration page refreshes and comes back blank just with the heading ‘Create an Account’ no registration form on the page.
No activation emails are being sent, tried all basic troubleshooting steps, deactivated all plugins etc.
I will be grateful for any guidance provided.
Thank you very much