IMPORTANT: Once you open an order on the Revel iPad, VinesOS can no longer send any changes to that order. This is because, when you open the order on the iPad, the iPad effectively becomes the 'master' of the order going forward. Any changes attempted to be pushed to the order from VinesOS will not have any effect. This limitation is imposed on the Revel side, and there is nothing that VinesOS can do to change this.
Be careful not to open a declined order on the iPad if you are planning to receive payment for it on VinesOS. If you do this, your accounting will be off, because revenue will have been received on VinesOS but cannot be pushed to/updated on the iPad.