The Waiterio app can be used offline in read-only mode.
It is not currently possible to add new content such as creating a new Order in offline mode.
We do think that the possibility to add new orders in offline mode would be nice.
Unfortunately it is technically very difficult to achieve and we prefer to focus our limited resources into adding and updating more essential features.
We suggest you to get a fast DSL connection and a good wifi router to solve the No Internet Connection warnings.
You can also use a 3G/4G mobile data connection with a sim card on each device or shared through a portable wifi router.