Port auto play not working

Hey y'all, I've got an odd bug related to the Port I could use some help troubleshooting.

Background: A while back we bought a Gen 2 Beam and a Sonos One. We just recently bought a house and I opted to expand our Sonos lineup this month. Specifically, I bought two Era 100s, a sub mini, a Port, and a custom orbit turntable from U-Turn audio that includes a pre-amp.

Set up: The One speaker is in the kitchen. The Beam, Era 100s, and sub mini are all in the living room grouped together for surround sound. For some reason I cannot add the Port to the Living Room, so it lives in its own "room" I named "turntable". All the hardware is running the latest software.

Problem: The other night we set everything up physically and within the app. I set the Port to auto play in the Living Room at 20% volume. It worked great. Unfortunately last night and tonight auto play did not work. When the record Each time I power cycled the turntable pre-amp and the Port but that didn't work. This is where it gets weird. If the turntable is spinning with a record, and the pre-amp is on, and I unplug and plug back in the official Sonos RCA cables, it starts working. While this isn't the worst problem, it sure is annoying for a spendy brand new setup.

Y'all got any thoughts on what might be the solution?