To make a test payment with PayPal you need to have a PayPal sandbox account.

You can use the following sandbox accounts to test:

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The password for these 3 account is "demo1234".

You can also use your own PayPal sandbox account. If you don't have any PayPal sandbox account yet and you want  to create one to test:

• Go to https://developer.paypal.com/
• Login with your PayPal account
• Go to Dashboard -> Accounts -> Sandbox (on the left menu) or access this link: https://developer.paypal.com/developer/accounts/
• Click "Create Account" button to create a new sandbox account
• Go to https://giftcarddemo.cmext.vn/ add some gift cards to shopping cart
• Checkout and login with your PayPal sandbox account to complete your payment