When I try to do this, the connection dialog hangs. I have PermitRootLogin yes in /etc/ssh/sshd_config and I can log in as the root user using the command line with sftp root@IP, but when I try it with Dolphin it does not work.

Update: AI was able to help me solve this. I’m not quite sure what the issue is, but running this and then trying to connect solved it:ssh-keyscan -p 22 <SERVER_IP> >> ~/.ssh/known_hosts