How can I get the PayPal integration to work to pay the registration for a conference?

I did all the steps to integrate the PayPal payment, but it is not working. We get an error message when testing this form to pay through the PayPal Integration.

I checked your form and I'm pretty sure it is related to your PayPal account. So you should contact PayPal support for this.

Also you can check this article from PayPal: https://developer.paypal.com/docs/classic/express-checkout/digital-goods/IntroducingExpressCheckoutDG/

Do get back to us if you have further questions.

Thank you!