Time Machine restore worked ONCE, but now seems broken, won't restore
I startup in Recovery mode, try to restore from Time Machine backup, and it says no backups found. I am in DIRE need of a fix for this. I did this once (thanks to the kind direction of this Apple community), and it actually worked, but took 27 hours. I got a good reboot, and saw all my files back. Then the SSD failed again, and all went away. I reformatted the SSD again (hopeful, right?) but when I went to restore from Time Machine, it says No Backups found. They are there, I can see them in Finder, but the Recovery mode does not recognize them anymore. What are my options? Should I take the backup drive (a Seagate 4 TB drive) to an Apple Genius for diagnosis? I am willing to spend money to recovery my files, over 1 TB of music, photos, documents, data.
iMac 21.5″, macOS 10.13