This option will allow you to pay via a Paypal account (if you sign in) or using a credit/debit card via Guest checkout. Please find further information below regarding the options; Guest checkout – PayPal allows you to pay via PayPal without signing in to, or signing up to a Paypal account. You will be prompted to enter your card credentials and billing details. If you are unable to use the Guest Checkout option, it may be due to one of the following reasons: Incorrect email address: You have entered an incorrect email address or an email address that PayPal was unable to verify. Location is not supported: The ability to allow you to pay via PayPal through guest checkout is determined by your local PayPal organization’s security and risk management policies. Fraud prevention measures: PayPal has fraud prevention measures in effect for all transactions and therefore, in some cases, PayPal might prevent you from using the guest checkout if they feel that the transaction poses a certain risk. Sign in – If you already have a PayPal account, and wish to use this option, you simply need to click the ‘sign in’ button. Then enter your login credentials for the account you wish to use, and follow the steps on screen to complete checkout.