Hello again :)
You can't repair them just yet. There is no point us repairing any until we can repair them all. And first, there is another very important step we must perform:
Please download SeaTools for Windows from here:
SeaTools for Windows | Seagate
Run a SMART test (if available), a short DST (self test), short generic, and long DST.
Stop and let me know if any of them fail.
Thank you!
Richard