Ok so I was just trying again to turn on ASIO, and I enabled it anyway after the pop-ups I got from my message earlier, and it automatically turned my input in Preferences - Audio - Devices to "Realtek ASIO HD Audio input 1"- so I just changed it to "Yamaha Steinburg USB ASIO", and its now the interface is showing up as an input. But, I'm still getting no signal.
Here's where I was originally not getting the Steinburg to show up as an input in ASIO mode, but it's here now.