I've upgraded to 188.8.131.52, so I now have the "SSH-RSA Public Key" field for the shell user. I add the pub key like so:
After saving, it still doesn't work. I get prompted for the password after connecting.
I've verified that both of these were created, but as root user and group:
The above key is in the authorized_keys files as one line.
Should the user and group be root?