I discovered that my surrounds weren’t playing any movie audio, so I opened up the Sonos app. I don’t really use it often. I think this is the first time I opened it this year. One of my Play:1s showed up as “Not configured”. When I clicked the wrench it said that it didn’t have the right software version or something. I mixed up which one it was on the app so I ended up unplugging the right side speaker (RS) and plugging it back in. Then I saw that one said Play:1 (LS) and the other said Play:1 with nothing. So I factory reset the LS speaker (again due to confusion) and added it back to my surround room. But I saw the same thing.
I disconnected the surrounds and got a message again that the Play:1 that I just factory reset wasn’t added to my system, so I added it to my surround room again and then it recognized that both Play:1s were added to the room and asked if I wanted to make them surrounds. I got through the wizard without an issue and now both surrounds are connected; one says Play:1 (RS) and the other says Play:1 (LS). I thought I’d share this with the community in case someone else comes across the issue.