When I run the Autotune tests on your site, I'm seeing all things are passing on the site the domain like masc.....bos.com . Are you still seeing this error?
On a separate note, the version of JFBConnect you're running looks to be v6.0.1. The latest is v6.2.3, which we'd recommend you upgrade too. There are *no* security issues with that release, but there are a lot of new features and performance improvements you could take advantage of by upgrading.
I hope that helps, but if you're still seeing that error, let me know specifically what site it's on so we can investigate further.
Thanks,
Alex