I am trying to setup a testbed in PayPal Sandbox in order to implement/test the DoDirectPay API for my company. DoDirectPay uses a certificate file (as opposed to a signature) per the documentation as well as the example code snippet [here](https://www.x.com/paypal-apis-dodirectpayment-php-5.3/soap)

Per the top Google search [result](https://cms.paypal.com/us/cgi-bin/?cmd=_render-content&content_ID=developer/apicertificates) for "download api certificate paypal" it should be possible to choose between obtaining a signature or downloading a certificate.

The test Merchant account I have created for sandbox was instantiated properly; and I am able to login to the sandbox site without issue. I have verified that the Merchant account is indeed set up for PayPal Pro. When I proceed to Account->Profile->Request API Credentials the only option is to obtain a signature. The signature matches what is displayed in the Sandbox admin panel for users; however that is useless to me as I need to test DoDirectPay which requires a PEM formatted certificate file.

How can I get SandBox to spit out a certificate file for me to test DoDirectPay API?

P.S. - I have already looked through several articles including [SO1](https://stackoverflow.com/questions/7769876/paypal-api-credentials-for-sandbox) and [SO2](https://stackoverflow.com/questions/11628631/paypal-sandbox-integration-api-credentials-not-found) but neither really seems to relate to exactly what I need.