WHMSonic requires your main server IP for license issue. If you dont know your main server IP or if it is different than what is provided on WHM, can cause to license problem and WHMSonic may detect a different IP due to network configuration. 


Please login to your root SSH and run the following command to see your main server IP detected by WHMSonic. It must be your license IP even if your main server IP is different on WHM.


lynx -dump http://www.whmsonic.com/ip.php


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