I canceled a pre-order

To cancel the pre-order go to https://account.microsoft.com/billing/orders/ then find the order or pre-order you want
to cancel, and select Cancel item next to the order.

Hi, as the Ambassador says you can cancel the pre-order by contacting Xbox support, I would recommend you call them by phone.

support.xbox.com/.../pre-order-faq

Can I cancel a pre-order?

Yes, before we release the game, you can cancel your pre-order by contacting Xbox Support.

Hey Killja.

Thank you for reaching out to the forum. Here is a guide on how to cancel pre-orders. Hope that helps

Microsoft store - Cancel an order or pre-order

Cancel the pre order, then pre order the correct version after.

Because you can cancel pre-orders anytime before the release date.

That actually is not a valid point since the pre order on demand missions can be cancelled anytime as well. I strongly believe that Pre-Orders should qualify.