Lost access to all my Adoble photo apps

When I try to boot my various Photoshop apps,  Lightroom, and Acrobat DC on my desktop Mac Retina computer (5K late 2014) running on Catalina, a blank white box appears and hangs on the screen (see pic). This occured after I purchased a new Macbook Pro and migrated my apps from my older Macbook Air to the new laptop. I've read elsewere here that this is a problem with activation due to the Adobe apps being on too many computers (3), so I unistalled all my Adobe apps on the older Macbook Air. That didn't solve the problem. I can't find any information on the Adobe website where to deregister a computer, but I assumed that uninstalling the apps from my older Macbook Air would do that. Photoshop 2020 works on my new laptop, however, Lightroom does not open. I'm in the middle of a project and am really in a pickle.  Can't figure how or where to chat with Adobe staff. So any help from the community be appreciated.