Initially I thought our unit was a dud and left a review saying the same. Josh himself reached out and offered a full refund and he was serious.
I said you know what? If he's serious, I'm going to be serious too. I don't want money, I want a DDR set up, so let's try and find the issue here.
I took the box to an EE I know and several minutes with an ohmmeter later they determined the box worked but the extension wire we were using was bad. Once we connected directly to the console, we were golden and I've been killing it at DDR on PS2 ever since. Thanks Josh 🙏