cPanel languages are defined on the ip address. Since it is defined on the IP address, you must query its license from the cPanel server and obtain approval from cPanel. For example, let's say you purchased a cPanel license on your server and you still get a license error when you log in to the panel. Simply connect to your server with SSH and run the following command;
Code to be executed in SSH:
/ Usr / local / cPanel / cpkeyclt
After you apply the command, you can log in to your panel and start using your licensed product.