For development store created using the new dev dashboard, the POS Pro requires manual subscription activation (despite no payment method attached).
Previously, the development store created using partner dashboard will have POS Pro included (without needing to upgrade in the POS sales channel).
I have managed to subscribe POS Pro on the new development store (using new dev dashboard), without having a payment method. But now I kept getting email about the unpaid bill for POS Pro everyday, with no way to cancel the POS Pro subscription . Anything I can do about this? (I subscribed POS Pro to test my own app POS extension on POS)