Hi mohammed,
Mainly, our item is an HTML template and we have just provided the WHMCS template for FREE of cost with our HTML template by customizing WHMCS default six template’s header, footer, and color based on our HTML template.
In this case, you need to use both HTML and WHMCS templates separately. HTML template to show/represent your products/services and WHMCS template for billing like as our demo.
Please Note: WHMCS template doesn’t be an HTML template.
Best Regards,
ThemeLooks Support Team