Now the vender is using a different company to receive the FTP files so I have to update all of the information. I can do most of it, but I can't figure out what to do about the public key. Like I said, I thought that last time I generated a public/private key and sent them the public key. This time they sent me the public key and I can't find any documentation on what I am supposed to do with it. I see the Private key file location in the SSH >> Authentication, but I am lost.
they must be confusing public and private keys. The public key is on the server, the private key is something you have. Either they sent you the wrong key, or they sent you a private key but told you it was a public key.