Good day @gregary
Thank you for posting to the PayPal community.
To create stand-alone Payment buttons, please follow the steps outlined below:
Login https://www.sandbox.paypal.com/ >> click on "settings icon" >> go to "Account settings" >> Website payments >> PayPal buttons >> select the preferred button type >> fill all the required details.
(Or)
Login https://www.sandbox.paypal.com/ >> go to direct link " https://www.sandbox.paypal.com/buttons" >> follow the above steps
Important : Yes, we recommend merchants to integrate our latest PayPal Checkout (Smart button) product.
I would suggest to please use the https://developer.paypal.com/integration-builder/ to generate button code and use on your website.
https://developer.paypal.com/docs/checkout/standard/integrate/#link-knowbeforeyoucode
Merchant should first perform Create Order API( https://developer.paypal.com/docs/api/orders/v2/#orders_create) call and then redirect the customer/buyer to "approve" URL.
Once the order is approved by the customer/buyer, merchant should perform Capture Order ( https://developer.paypal.com/docs/api/orders/v2/#orders_capture) API call and customer/buyer should pass the valid funding source.
https://developer.paypal.com/docs/checkout/
https://developer.paypal.com/demo/checkout/#/pattern/server
If your still facing issues, please create an MTS ticket via - https://www.paypal-support.com/s/?language=en_US with the detailed information and error details.
Sincerely,
Kavya
PayPal MTS
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