main menu only showing when simulating not when i play the game from a selected viewport

ok so i have a main menu set up for a pinball game that im making for a class project and all the project files and everything are on youtube and i followed the videos exactly but i still cannot seem to figure out why my main menu is not showing up when i hit play selected viewport. i have included screenshots of my game mode and main menu and everything seems to be correct. I would appreciate any help on this issue as the project is due in a couple of days and i cannot resolve this issue.