To keep the pricing fair our plans are based on the number of cPanel accounts hosted on your server. The personal plan only scan servers with ten or less cpanel accounts. The premium plan only scan servers with fifty or less cpanel accounts. And business plan doesn’t have limit on cpanel accounts. You will need to upgrade your plan whenever the number of cpanel accounts crosses the plan limit. You can check the number of cpanel accounts on your server from WHM >> List accounts.