Can install CC15 but not anything newer

I've been trying to install the entire CC18 suite on my lab computers but it starts the installation and suddenly removes everything that installed and a message comes up that the install failed but there was no reason why.

I ran the creative cloud cleaner tool and had it removed everything adobe on the machine including CC15. When I tried to install again the same thing happened.

I was able to re-install the CC15 suite with no issue whatsoever. I downloaded a newly created CC19 package and it fails the same as CC18. What is going on that CC15 installs perfectly but I can't install anything newer.

I even tried to install the new versions one program at a time but they fail the same way.

Please help! I'm running out of summer before the students get back.

Thank you.