So, I was correct in my final assumption of my ISP (xfinity) being the culprit of my issue.
The ISP has an advanced security feature that blocks websites that are confirmed or potentially harmful. My ISP says the site is blocked because of potential malware. cMaN’s repository has never done me any harm in the past so I see no reason to not keep using it.
So, I guess I have to turn this feature off to access the repository.
Any other xfinity customers on troypoint have this issue lol?