Are you able to access the server via Web Host Manager? If so, you should be able to update cPanel using "WHM Home » cPanel » Upgrade to Latest Version" to initiate the license check. Or, if you need to restore a default instance of SSH, you can use the safesshrestart Autofixer documented at:
Otherwise, if the license issue is preventing access to WHM, you'd need to access the server via another method (e.g. console access) to run the license update command.