Multimedia and Comodo

Hello,
I’m new user of Comodo, I just installed Internet Security Premium and after it can’t fully use website I’ve always used, and know for 100% that is safe.
The thing is before download movie from there is possible to preview, like first 10minutes, and Comodo blocked it, can’t see miniatures and watch movie before download.
I don’t know why it happened and where to change some options in Comodo so could work normally.
Can someone help?
Thanks

It would be helpful if you would provide some additional details:

Name of website
Browser type and version (and extensions)
Settings used in CIS

Did you enable Secure DNS when you install CIS?