Incompatible Illustrator Beta and Updates

I'm looking for some help with updating / installing Illustrator Beta. 

I was able to install it a few weeks ago, now the build has expired and it says that my "system is incompatible." Now half of the Adobe programs will not work on my device. I'm running Mac Catalina 10.15.7, with over 24 GB of hard drive space. Not sure what I need to do (besides buy a new computer - ha)! Any thoughts are apprciated.