Start button during Gameplay

Hello guys first I would like to thank those behind the creation of this app as a PC Gamer I made sure I both game with keyboard and mouse or controller and my couch.

I usually use remote PC application on my phone but this program is amazing.
The only serious problem I got and that made me stop using gopher is because when you are in game and you click start it shows the windows menu from your desktop I really want to use the app just to click and move the mouse how do you disable the start button for window so I can open the game menu thank you so much guys I tried to look for answers didn’t find any so I am posting here.