Hack Pack 3 - Label Maker / help needed please

Hello! I decided today would be a good day to try my first Hack Pack. I had a blast assembling it, but I haven’t been able to get it to work.

After I turn it on, the device never initializes. Instead, I just see blocks.

All of the wires look to be plugged in correctly. The only think that sticks out to me is that the lights on the board of one of the motors never turns on. If I manually turn the sand paper wheel, I see faint lights on the board, but that’s it.

Any ideas what the problem could be or how to figure it out? The troubleshooting guide for this hasn’t been put on the website yet.

Thanks in advance