We added additional checkout buttons to cart page as it described here.
But some problems appeared:
1. When I click 'pay with PayPal' button I see the same that when I click usual 'checkout' button, not PayPal payment.
2. When I click 'pay with Amazon' first all is ok, I login to Amazon, but when I click 'Complete Order', page just refresh, nothing more.
Please, where can be problem?