A mismatch in login details would be what causes problems surely, I just unblocked your IP from the server.
I doubt that the functions to reset password that exists within the sso system would work properly, and I don't think it syncs it from the server either, so I'll set a new password for you directly on the server, and for now you should be able login directly there although not through sso. Keep in mind though that direct login using the link I gave will not count towards activity so you would need to login to the sso to mark as active (continuing to cpanel/directadmin is not required for that).
Once migrations are all sorted you should be able to set them to use the same password again.