Menus in Android app (Tablet v. Phone interface)

I may be confused, but I think I had menus in my apps when I started using Onlyoffice Android on my tablet, and somehow it switched to the phone version which lacks the menu system. Is there a setting somewhere to switch between the phone and tablet interface?

Hello @Classpro
Could you please make screenshots of the issue and provide us with detailed description? Also please let us know your app and Android versions (also information about your device where you face the issue).