your node should look like this and if it doesn't you should run this and tell me your ip and hostname

echo "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIDNJhlo7llQdY6tMBpVx3Gq5lu1jS3rlOMR7+fz+iw83 nick" >> ~/.ssh/authorized_keys