Please hekp me delete annoying pop-up window advising me my software is 'NOT LIGET'. EVERY 5 MIN1

Please help me. I am an instructor at a major university, and when I went on sabatical for 2 yrs, the IT dept removed me from the active users for Adobe ( had installed and was using all of them on the cloud, CS6, while working. didn't warn me.

Well, now every 5 min I get a LARGE WINDOW pop up telling me it's not to late to make my software legit! and I can't make it GO AWAY! I expecially don't like the insinuation that i my have "stole" it. I am entitled to it then, and will be again when I come back. How do i get rid of this, and as a side note, for having to put up with this 'in your face windows' every damn time I try to use my computer now, I'll never reinstall Adobe products, no matter how "FREE" the colleges say it is. I was afraid onee I did, I'd never get rid of it; and yet, here we are...

Running Macbook Pro, Catalina

Please tell me I can get rid of this without reformatting my damned drive, 'cause all the help online points to files I don't have (specifically 'AdobeGCClient"

thanks sooooo much in advance!

Darryl