Head over to Forms → Integrations screen. Obtain your PayPal credentials here. Paste your Client ID and Client secret credentials in PayPal widget. Click Save Changes. Configuring PayPal application and obtaining credentials In order to obtain a set of credentials, PayPal requires you to set up an application first. To create one, head over to the My Apps & Credentials page on the PayPal Developer dashboard. Sandbox and live mode PayPal assigns two pairs of credentials to your application. Live credentials are linked to your real PayPal account, while sandbox credentials are linked to a virtual account you can use to test your integration. We suggest first testing your integration in sandbox mode and switching to live mode once you’re sure about your Payment field configuration. For more information, take a look at the PayPal Sandbox Testing Guide.