installing 5 sonos play 1 speakers

I have 5 Sonos play 1 speakers, each installed for a different room in the house using the Sonos app. Initially, I connected each speaker to the modem with a cable and after introducing all the speakers, ensuring their functionality and sound playback, and assigning them to their respective rooms, I switched them to Wi-Fi mode and connected them to the network. Each of them works correctly. However, the issue is that I can't see all of them simultaneously in the Sonos app. When all the speakers are connected to power, only one of them is active in the app, and I can use it. If I unplug it, another speaker designated for a different room becomes active, but the rest remain inactive. I suspect the problem lies in the way I set them up because I had only one network cable. As a result, I installed each of them separately in the app and couldn't figure out if all of them are active when connected with the cable or not. However, I know that each of them works when connected with either the cable or Wi-Fi individually.