How to connect WHMCS ?

Hi there, @ferreirex.

I'll route you in the right direction to get your concern sorted out and connect your QuickBooks to Web Host Manager Complete Solution (WHMCS). 

You'll want to contact WHMCS support team since they have the necessary tools to connect it to your QuickBooks account. You can contact them by visiting their website. 

When you're done syncing your QuickBooks account with WHMCS, feel free to browse through this article to maximise your knowledge in personalising your reports such as sales transaction reports: Customise reports in QuickBooks Online.

You can always get back here if you need further help in connecting QuickBooks to WMHCS. I'm always available to help. Have a great day!