React Native App using Python and Flask -- 2

I have a fully built React Native app that uses Python and Flask. The app has a barcode scanner and I need you to connect to flask web api to get information once the barcode scanner gets a serial number. Work should be done end to end. If the app doesn't work on expo, you should connect to my computer to fix the issue. Work should be done within 1 day as its a very simple project.