The API has been created to allow remote management of your hosting accounts and sub users from your own applications, making it super flexible and unbranded.
No, you can choose to either use our WHMCS plugin or directly manage your account here at hyper.host. Your customers will still see a white label solution with no branding.
We charge on a per site basis, and you are charged monthly in arrears, on the same day you signed up. Your bill will depend on the number of websites that you have on the billing day. You can calculate pricing using our simple slider at https://hyper.host/pricing.