First of all, remove your browser cache. If you are using cloudflare, then remove your cloudflare cache. After then, reload your website with Ctrl+F5 and check the change.
2nd, that’s all about WHMCS settings issue. In this issue, you need to contact with WHMCS. This is because, we have just provided WHMCS template by customizing WHMCS header, footer and color based on our HTML template, but the settings is all about yours.