A newer version of the Gradio SDK is available:
4.41.0
Navigation
Overview
To access the other functions of the vendor console (Product List, Sales Report, Settings, Logout) you must first open the Navigation Menu. This is accessed by pressing the “Hamburger” icon (three horizonal lines stacked vertically) in the top right hand corner of the screen (Note: you cannot access this navigation from the Order details page; you must navigate Back to the Orders page first).
After opening the navigation, you can simply tap on one of the items to open that page.