Thanks for your efforts mcothran2069.
I'm still afraid that this will lead me to loose files. As explained above, I have two separate issues with the iCloud:
- new files that I created and saved on my WIN11 PC do not sync with the iCloud. I don't see these files on my other devices
- old files that show on both, PC and other devices' iCloud app, but that I can't open on my PC
I'm not worried about 2. The first is what I'm concerned about. If I log out of iCloud on my PC, then I fear that those new files will be lost.
I developed a workaround, which is extremely cumbersome but is the only solution I could think of. For issue 1., I copy all those new files to a hard drive on my PC (there are 100s, stored in dozens of folders, so not an easy task). Then, for issue 2., I download the files that I can't open on the PC from the iCloud web app and add them to the new physical backup on my hard drive.
It'll cost me probably 8-10h of work. I whish there was a more economical way of doing it. But if there isn't then that's what it takes.