You try to create a new account in Home » Account Functions » Create a New Account and encounter this error:
Account Creation Status: failed
Your system has run out of available IP addresses, or you do not have permission to use any more IP addresses. (Unable to find an IP address.)
This error appears when you try to assign a package that uses a dedicated IP address to the account, and you only have a single IP address on the server that is already in use by other accounts.
Assign a package that does not use a dedicated IP address.