ok I have jsut tried again.

This is what happens.

I add it to cat on BK then it says "Pay" i click on that then it takes me to a new page and it says "add your card" So i add my card then it says " Save card" so i save card then it tells me the card is already registered with paypal which i though far enough, but it wont let me go any further, there is no placee telling me to continue with transaction or anything.