CSP Manager doesn’t seem to be working

I’m trying to add a CSP rule to enable embedding content from player.streamguys.com in an iframe.
I added the url to the Policy: frame-src entry but the content is still blocked. Where does CSP Manager make changes? If I knew which file(s) to look at I may be able to see what is happening (or not). Right now I’m shooting in the dark.

The page I need help with: [log in to see the link]