Clearing Customer Sessions

We have a client who has a meal prep service that opens her store Saturday-Wednesday and closes it on Thursday and Friday. During that time, we update the information and clear the customer sessions (saved carts and other order information) so that people cannot place an order for old items.

When I clear the sessions, on the website it will clear out the carts and any pending orders, however, on the app, it’s not clearing the cart and pending orders.

Can anyone help shed some light onto this subject or know of a solution within the app that we can clear sessions?