I got my Looking Glass today and tried hooking it up to my MacBook Pro with no luck - the LEDs came on, but the display was never detected. I disconnected all other accessories, rebooted, connected the USB cable before the HDMI, and then the HDMI before the USB all without success. This is a MacBook Pro with 4 USB-C ports and I tried with 2 different adapters.
Here are the specs:
MacBook Pro 15-inch, 2017
Processor: 3.1 GHz Intel Core i7
Memory: 16 GB 2133 MHz LPDDR3
Graphics: Radeon Pro 560 4096 MB
Apple USB-C Digital AV Multiport (https://www.apple.com/shop/product/MJ1K2AM/A/usb-c-digital-av-multiport-adapter?fnode=8b)
HyperDrive USB-C Hub (https://www.amazon.com/HyperDrive-Type-C-Adapter-50Gbps-MacBook/dp/B01MUAEI7J)
I’m not sure what to try next.