Vicarious Books

Kal and Tim

Hi all, I am not sure if I have put this in the correct place but I am looking for some assistance with purchasing from Vicarious Books.  I am trying to buy two books and have registered with them.  However, I cannot seem to find where I pay for them, when I
conplete my order it doesn't bring up an option to pay but says that I have not filled in the 'payment page', this is where I have a problem as I cannot fine the payment page, can anyone help with this?  Many thanks