,When press "New Game" the game start but don't remove the menu

Hello
I Making a menu and all buttons work except the “New Game”
When i click new game the game start but the menu still there

My menu blueprint

And this is my lvl blueprint

I search is forum and youtube and for then works but for me don’t

You have to store the created widget from “Create MENU_C Widget” in a variable, then when you start the game you remove it from the viewport.