I CAN NOT download any apps from my university account cos it defaults to personal account

This is literally driving me insane. I have previously had a personal account for MANY years with Adobe and I  can't get onto any human being to help me. I now have a free university account which I was assured that when I set it up I would be able to use the existing Adobe apps on my laptop. Now of course since I closed my personal account which was costing me a fortune in favour of the free account I CAN NOT download Creative Cloud without it defaulting to my personal account, even though when I download it I am doing it through the university account. Therefore I am unable to use Adobe apps at all. My personal account was closed and I have signed out of it, I have cleared my caches, shut down the computer, removed CC, used a different browser and still it defaults to my personal account. I can not get any sense out of the university IT because they are not experts on Adobe. Any suggestions would be gratefully received.