Don't quote me on this papertiger, but if you don't have a roommate listed, that normally
just means that you currently don't have one assigned. Give it a couple days and I'm sure you'll have one (fortunately or unfortunately).
When you filled out the application for Rogers, did you choose to live in a single or double? From what I understand, there's very few singles in Rogers, but it could be possible that you were assigned to one. More likely though, you just haven't gotten assigned a roommate yet.
Have you checked your Account Statement under Secure Apps to see what you owe for housing? I don't know how they'd list Rogers since it's month-to-month compared to regular housing which is on a per-semester basis, but seeing what they show as you owing for Housing typically is a dead giveaway for what you're assigned to.