Subscription Button not working


I have a free and a paid subscription set up.

Yesterday everything was working fine, when someone clicked “Sign up” from the Subscriptions Page, it took them to a registration page.

Now when I tested it in a different browser and clicked Sign up, it just reloads the site and thus never gives anyone an option to register.

PLEASE please help.

I already tried to “Repair membership tables”, but this must not be the issue.