Yugioh Legacy add 10k money option not working

I tried to use the inventory cheat for extra dp (the money) and it doesn’t seem to function. yes, I also read the tip to try it in the Main menu. I have tested it in the startup menu as well as the “Main Menu”. Help would be greatly appreciated. XD

I found the solution: you have to pad activation. You cannot activate it if you click on the infinity app and back. The hint should be simply stating to activate the selected key while in game and on the Main Menu… Thanks, hope this helps