Error: Could not fetch page. Server returned:/Error Code: 406 - Unknow

The full response your server is sending is:

Not Acceptable!

An appropriate representation of the requested resource could not be found on this server. This error was generated by Mod_Security.

Mod_security is an Apache module that acts like a firewall against some requests. I'm not sure why, but its configured in such a way that is preventing our automated tool from scanning your site.

You'll need to contact your hosting provider to loosen the restrictions in mod_security or determine specifically why our request is being denied and let us know so we can try to work around it.

With that said, I just checked your site for all the issues that the Autotune tool normally looks for and everything looks good to me. I'd proceed through configuration and testing and let us know if you run into any functional issues. We'll gladly help however we can.

Thanks,
Alex