Problem with the booster and cdn

Hi guys
I have a small problem with the gdbooster and maxcdn.

All images are served via maxcdn and it seems to work fine .

I now have a error in google chrome saying :
Font from origin ‘https://familyfun-sc9rivnakdludl.netdna-ssl.com’ has been blocked from loading by Cross-Origin Resource Sharing policy: No ‘Access-Control-Allow-Origin’ header is present on the requested resource. Origin ‘https://familyfun.site’ is therefore not allowed access.

Do you have an idea how to fix this ?

Also after i installed the booster and followed your instructions i still dont get a whole lot of speed on the site. Every image is optimized with ewwww and i still see 4 -5 seconds loadtime on familyfun.site . is this normal? our old system was blazing fast compared to this , and i would love to get it fixed before we start to add 10.000 listings

Our google pagespeed : https://developers.google.com/speed/pagespeed/insights/?url=familyfun.site
gmetrix https://gtmetrix.com/reports/familyfun.site/VRDJQ9mn
pingdom: https://tools.pingdom.com/#!/BZX4Q/https://familyfun.site

We are hosted at siteground on the grow big account . what else can i do to optimize speed ?

Can i add the sgcache plugin or would that break the site ? they do memcache and a few other things well.

Any help will be much appreciated