Creating main menu problem

I have a problem while creating the main menu using this guide (UMG UI Designer Quick Start Guide | Unreal Engine Documentation)

Everything works fine excpet the main menu buttons, when I clik on Play Game or try to change resolution, nothing happens

Are they wired to anything?

yes, Play Game button is assigned to Open level and then Remove from parent (Target Self). Change resolution is assigned to Execute console command r.SetRes

It is working now. It was an issue with selecting the level (seperate level for main menu)