Hey -
A screenshot of what your setup looks like would help in understanding what’s going on. The steps for the pause menu in the tutorial worked to pause/unpause the game in my test project. Something to remember, if you’re using the Set Game Paused node to pause the game, you’ll also want to add Set Input Mode UI Only to give your pause menu UI input controls. Then inside the UI you need to have a second instance of the Set Game Paused node to unpause the game and Set Input Mode Game Only (or Set Input Mode Game and UI) to give input back to the game.
Cheers