I have two cyberpanel servers and I want to transfer all sites
I can fetch accounts but after i get error message
Connection to:xx.xx.xx.xx Failed, please resetup this destination from CyberPanel, aborting. 
I think you have restricted SSH access or disable root login, on your old server try to ssh into your new server
Can you do that?
I have enabled ssh with ssh-keygen to old server
I can login with ssh not with public root password
Did you try the remote transfer again?
Try and see if you run into any issues.