The RankPay WHMCS module makes it incredibly easy for web hosts to sign up their hosting customers for SEO services, thus building additional reliable and recurring revenue. By featuring a promotional banner in every customer's instance of WHMCS, you'll get a targeted ad right in front of your customers when they're logged into WHMCS. When a customer signs up for our SEO services, you'll receive a notification and start earning recurring revenue as soon as their account becomes billable.
To learn more about RankPay, visit https://www.rankpay.com
Other Themes not full tested yet so I am not sure if it works or not. You can contact me first Click Here
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