"Protected Content Message" appears only as 404 Error

I customized the message and had it working correctly, but since this latest update, all I get is the 404 Error.

Here is an example page: http://tinnitussynergy.com/protected-content/?redirect_to=http%3A%2F%2Ftinnitussynergy.com%2Ftpt-test-page-for-protected-content%2F.

I have granted you access to my site.