Ok it appears PayPal has deprecated the old Subscription Buttons. You must now create subscription buttons from within the PayPal account you want visitors to subscribe to. See: https://www.paypal.com/us/smarthelp/article/important-notice-regarding-upcoming-subscription-changes-ts2239 Documentation for creating the new buttons: https://developer.paypal.com/docs/classic/paypal-payments-standard/integration-guide/subscribe-step-1/#
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