XF 1.5 This action is available via POST only


Active member
He sent me that link so not sure how he got to it, but yes, he is doing that and filling out all his details such as username, password etc, but when clicking the Sign Up button at the bottom of the page he is then getting the "This action is available via POST only" error page.

I've registered a test user myself and it went through fine, so I have no idea why this person is getting this error?