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Attach Diagnostics ZIP to your NEXT post in this thread.

Disk3 is probably OK then for now.

https://docs.unraid.net/unraid-connect/automated-flash-backup/#restoring-to-internal-boot

If you transferred your license to TPM, then your flash drive has been blacklisted.

Attach Diagnostics ZIP to your NEXT post in this thread.

Nobody is going to download all those separate attachments. Diagnostics is a single zip file. If you think Diagnostics downloaded a lot of separate files and folders, it is because your PC automatically unzipped them. Find the single zip file wherever downloads are saved, and attach that to your next post. Also Not possible. You can boot from one of your storage devices, but the license must be either on a flash drive with GUID, or on TPM. Unless you did TPM, you probably just need to put your flash drive back in so it can find the license in its original place.

Not sure what you misinterpreted. This is true, since the bad disk isn't involved at all in rebuilding to a new disk. It is replaced. Less true if multiple disks are known to be bad, since all other disks must be reliably read to reliably rebuild a disk. One of your disks had a lot more reallocated than is safe, and I suspect those had been increasing. Not clear if other disks are of concern or not.

Copy is faster and safer than move. Move is Copy from source to destination, then delete from source. Delete is a write operation, so that would be additional writing to suspect disk even though it is just updating the filesystem to mark the deleted blocks available instead of overwriting all the data. Also all writes update parity. You can exclude the bad disk from user shares so there won't be duplicates, then when all files have been copied elsewhere, you can New Config to remove the disk and rebuild parity.

Probably safer to rebuild to new disks.

Do you have a current flash backup?

Redo then. Save the trial.key file from the config folder on flash, make a new install on the flash, put the trial.key back in the config folder.

Post new diagnostics

Try booting from USB2 port

Still strange. Do you have a current flash backup?