Hello, You probably won't be able to reach them via phone due to COVID and the impact it has had. You would need to use the web-form method to reach out to them. If you don't receive a response, please try again. The teams are extremely busy so please additional time to receive a response. (note : You will need a business account in order to request this functionality. It cannot be used on a personal or premier account type) To obtain the feature on a Sandbox (test) account for development purposes, first log in to developer.paypal.com with a Live account, then create a Business account in the Sandbox. Reference Transactions are enabled by default on Sandbox accounts that were created after December 15, 2015. Thanks !
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