Once an order has been placed, it is not possible to switch between delivery / pickup.
If the restaurant hasn't already accepted your order, you will be able to cancel your order via the app. To cancel an order during this time frame:
1. Tap the receipt icon found on the bottom menu bar
2. Tap "CANCEL ORDER" at the bottom of the order tracking screen
3. Confirm the request by tapping "CANCEL ORDER" again in the confirmation screen
Once cancelled, you're welcome to replace your order while selecting 'delivery' as your dining option.
If the restaurant has accepted your order, you'll still be able to cancel however you will be charged for the order as the restaurant will have began preparations.