How to easily bill customers (as like as cc billing) via Bitcoin on our paysite?

[vadult]

Hi
We are running an adult paysite and trying to bill our customers by bitcoin. I tried to put hosted payment pages from bitpay into our landing page. However nobody buys our premiums compare to credit card billing.
So is there a way to bill customers via bitcoin as like as credit card billing? What would you suggest? How can they easily pay via bitcoin by using paypal or credit card?

Note:
I am not sure this place is the right to ask but I just found here.