Hello
I have checked your project detail carefully and I am clear about your project.
The WHMCS is an all-in-one client management, billing & support interface for web hosting businesses.
I have used WHMCS for User Panel development.
Also, I have rich skills like PHP, HTML,CSS, Javascript, jQuery, Node js, React js, etc.
So I am sure I can do your project in a short time and I can start work immediately.
Looking forward to hearing from you.
Best Regards.