Trying to follow the guide, but getting connection refused on 2222. I downloaded putty keygen and generated a new key. Followed the steps of saving the private key, loading the private key back up in order to get the public key to display correctly
Copied the public key into a txt file, saved the txt file as ANSI as instructions say.
Removed the file extension from the txt file
Went to supervisor > control > import from usb. tried to putty in on port 2222, no dice.