This will return two public keys. Copy and paste the first public key into the Key9 "PUBLIC KEY" field in the SSH section of your account.
Login into Key9 and in the top right corner will be your name with a “pull down” menu option. Pull that down and go to “My Profile”. Once in your profile, select “Add SSH Key” (right of “SSH Keys”).
Give your new key a name and copy/paste the public key.