Smart menu project

Hello everyone. I want help with my projet. I want to connect a touch screen of Nextion with my mit app via esp32 wifi, as my idea is a screen for customers in the restaurant in which he chooses his food and sends them to the worker and receives them in the mit application so that the worker shows him the orders on the app as notification and when he presses on Button, another notification is sent from app to a customer screen for confirme his commands.Now my questions are how i can recieve notif from screen to app and how i sent it.and how i can link between my screen and esp32 and mit app. I am a beginner

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No-one appears to have an answer for you at the moment, have you made any progress?