Refusal to publish the AppStore - clause 4.2. What's wrong with the app?

Question

Apple Developer Program

I created an app for my bar and have been trying to put it on the AppStore for over a week, but every time I get the same answer without any additional comments "Guideline 4.2 - Design - Minimum Functionality. We continue to find that the usefulness of your app is limited by the minimal amount of content or features it includes."
In the description of the application, a video clip is attached in which all the features of the application are visible. A similar application for android has been around for more than 2 years. The application shows the current "board" of beer on taps and the current assortment in bottles with an advanced search. All data is pulled from our server. The application is naturally free, access is limited by age and region (Russia)

Why is the app not compliant with 4.2? What needs to be changed in order to be accepted?