IT IS APPLE'S FAULT! I used APPLE software (TIME MACHINE) to roll back to Catalina - Apple's OS that came installed on my computer. After rolling back to Catalina with TIME MACHINE the computer displayed the circle with a slash through it - indicating Catalina was NOT SUPPORTED on my 2019 Mac Pro that SHIPPED WITH CATALINA!
As far as I'm concerned I DID NOTHING WRONG. If rolling back to Catalina is "illegal/unsupported", then (1) during the install for Big Sur, that OS SHOULD HAVE DELETED all Time Machine Catalina backups since they are now considered UNSUPPORTED; OR (2), when entering Time Machine to roll back to Catalina, there should have been a HUGE ERROR MESSAGE that rolling back from Big Sur to Catalina would cause significant issues and potentially lock up my computer.
The Apple ID would not have come into play at all, PERIOD, END OF PROBLEM.
BTW, I never use my Apple ID. I BUY all of my software (Viewpoint, Davinci Resolve, Quark Xpress, TurboTax, Word, Excel, Powerpoint, etc.) directly from the vendors/retailers so I never have to enter an Apple ID.
When I bought my first MacBook Pro @ 2006 I started using iTunes on both my Mac and my windows PC (I've been using Windows since it first came out). I don't know how iTunes/Music works recently but back then if you installed songs onto a player with iTunes on the MacBook Pro, then tried adding songs to that player with the Windows version, you would get an error message - you could ONLY add songs with the same iTunes version - Mac or Windows, not both - incredibly STUPID! So I dumped iTunes forever.
When I set up my 2006 MacBook Pro setting up the Apple ID was simple, no credit card required. When I got my 2009 Mac Pro, I logged into my Apple ID only to be notified that I MUST enter a credit card, so I never finished the Apple ID setup, just closed out. I REFUSE to give my credit card info to Apple just so they can "store it" in their system. As I said I NEVER purchase anything through the Apple store so I see NO NEED for Apple to have my credit card info. (Yes, today you have the option of selecting "None" for the credit card info, but back in 2009 you DID NOT have that option.)
I also have 32 bit Adobe software and I REFUSE to pay ADOBE a monthly stipend so I can use their CS apps, which is the only reason I bought Quark Xpress - so I could use it on my 2019 Mac Pro where the Adobe apps aren't supported.
It's infuriating that I also have to upgrade the Mac OS to use a newer version of TurboTax. How is it that with Windows 10 (don't have Win 11) I DON'T have to upgrade to the latest OS to use TurboTax but I do for the Mac?
I also have a 2012 MacBook Pro because I refuse to be forced into using a system that's not upgradeable without BUYING A NEW COMPUTER - I just got a 2TB SSD for my 2012 MacBook Pro.
June 1 and still waiting on Apple . . .