Microsoft Lifechat LX-3000 Headset Mic does not work (other mics work fine)

Hi, I'm hoping someone can help me with this. I just bought a Microsoft Lifechat LX-3000 headset, and the speakers work, but the mic does not.

1. I tried to download a new driver, but MS says "Additional software, firmware, or drivers are no longer available because Windows 10 has all the necessary software to support Microsoft LifeChat headsets.": https://support.microsoft.com/en-us/topic/firmware-drivers-and-software-for-microsoft-lifechat-headsets-5ceeb582-45a4-fbb7-3c63-e24730b2ee29

2. I'm using Win 10, which is updated to today.

3. I know there was an April 2018 MS patch that needed you to enable microphones and webcams from the privacy settings. I did that, but still no luck.

4. Other microphones do work. I used an older headset (old and falling apart), and in Sound settings -> Recording, I can clearly see the green bar for the old mic, but not for the new MS one.

5. The MS Lifechat headset is enabled in device manager and sound settings.

6. I'll go test out the headset on another computer soon. (edit: does not work on a new laptop, either)

Anyone ever dealt wit this before? Any suggestions? Should I call microsoft? Thanks!

Pretty sad that non-MS microphone plugs and plays with Win 10, but a MS microphone does not...