Vortex Core keyboard doesn't work with the Shield?

I tried plugging in a [Vortex Core](https://mechanicalkeyboards.com/shop/images/products/large_2226_Core_1.jpg) into my Shield, and it doesn't seem to work. Other mechanical keyboards work (with the same cords and everything), but not the Core. Anyone know why that might be, or how I can get it to work?

Thanks in advance!