"No IP license found" Error when Attempting IP-based Registration

If you come across the following error message while trying to register CloudLinux IP license on a server:

# /usr/sbin/clnreg_ks --force
Error communicating with server. The message was:

Error Message:
No IP license found for X.X.X.X
Explanation:
An error has occurred while processing your request. If this problem
persists please enter a bug report at cloudlinux.zendesk.com.
If you choose to submit the bug report, please be sure to include
details of what you were trying to do when this error occurred and
details on how to reproduce this problem.

First, make sure you have a valid IP license for this server here.

Second, check that serverURL parameter inside the /etc/sysconfig/rhn/up2date file. It can contain the URL for one of our CL mirrors that no longer works.

For example:

# grep ^serverURL /etc/sysconfig/rhn/up2date
serverURL=https://cl.banahosting.com/XMLRPC/

In this case, try to adjust it as follows:

serverURL=https://xmlrpc.cln.cloudlinux.com/XMLRPC

That's it! You may use the /usr/sbin/clnreg_ks --force with no problems now.