HTTPS issue with www and apex on second GH pages site

So I have two github pages sites. My main is served on https enforced and I have another seperate site on a gh-pages branch which is served on https enforced Everything works fine and HTTP www works fine, but HTTPS www gives a cert error. This is really weird because my DNS/settings are the same as on

Here is my GH settings

This is my DNS record for

This is my cert error

I’m not sure what I’m doing wrong, the only difference between these two is the CNAME for www on is “” but if I set that for the same issue persists

I have verified it’s not a DNS cache issue by flushing my cache and confirming the DNS changed by using dig. For both CNAMEs.

I don’t know why, but it appears to have been fixed. Maybe it was a DNS issue that wasn’t fully eminated yet. I don’t know.