Ok, i have got a problem here's the ss:
I'm remaking (with my friend) the Multiplayer example .capx, and it returns no info about the rooms :/ .
I can't see your Line1-Line5. Have you connected to signal server? You need to be at least connected to signal server to retrieve ListRoomName or ListInstanceName.
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Oh, i didn't i though it just needed request. I'll edit this post if it helped.
edit
Thanks, after several more fixes it works fine!