How do I get Game Genie codes to work on Power Pak?

I've typed them in. I've made .txt docs. I've confirmed the codes work on emulator. But I can't get them to work on the Power Pak.

I've never actually read the rules on this game until just now and it says we start the timer when felix starts falling, but I've always started it when I press start game. I'm not sure how we decide which method we would like to use, so I'm hoping here is the place to ask that. Any thoughts from anyone?