Connection to Site and Preview Are Both Not Functioning

I’m struggling to connect my content to my site. It was working a few days ago, we made no changes on our side, and now I can’t get our site to connect to individual blogs. Furthermore, when I do a “Live Preview”, on the Contentful site it says “refuses to connect.” Has anyone had trouble with this in the past? We reviewed the documentation around X-Frame-Options and there does not seem to be any discrepancy on our end. Thank you in advance for any help!