I am interested in your One-Page Checkout, and I am trying to subscribe the membership in your website. But every time when I press "Subscribe", I receive the following message and then the process halt.
The page you are trying to access is restricted due to a security rule.
If you believe the security rule is affecting the normal operation of your website,
you can disable it by adding the following lines to your .htaccess file:
# Turn the filtering engine On or Off
Would you please advise how I can resolve it?