Yes, you can order 2 meals per day! However, you will also need to add on 2 extras (snacks, juices, shakes or shots).
As it turns out, it isn't possible to order just 2 meals per day without the extras, due to production and delivery costs.
However, if you prefer to receive two meals per day only, and do not wish to receive the extras, you can place an order for 4 meals per day and schedule deliveries on alternate days e.g. Monday, Wednesday, Friday. This way you can spread the 4 meals over 2 days as you wish, consuming 2 per day.