Paypal has changed a few things on the check out as guest option so now there is one of two ways it will work

Option one

To use a debit or credit card click the (check out button circled in red) you will then be taken to the chose a way to pay page, to use a credit/debit card click the option "Don't have a paypal account?" (circled in red) and finaly you will be at the debit/credit card page. Finish your transaction as you normaly would for a debit/credit card purchase.

If this method doesnt work and you keep being redirected to the same page then use the second method.

Option two

To use a debit or credit card click the (check out button circled in red) you will then be taken to a (Registration page) where you will need to enter you Name, Address, Email and phone number (Ill need this information to ship and contact you if needed) then click the yellow continue button at the bottom of the page which will give you access to the (Credit card page) so you can use your credit card to complete the transaction..