Jeff,
This is in their reward program terms: "Purchases made with third-party payment accounts, including, but not limited to PayPal and Venmo, will not earn additional Cash Back."
The reason I asked (when there seems to be no way to reach a person at the company who knows anything) is that I don't know whether PayPal is a "third-party payment account." It seems to me that it is. I use all my credit cards with my Apple watch, and I don't know if that means because they are on Wallet they are all being paid thru Apple Pay.
Any light you can shed on that would be appreciated.
Carol