Check out your Admin Dashboard, which can by found by clicking "Admin" on the bottom toolbar. It has links to all your new tools. Please let me know if you have any questions, and good luck with your new (old) wiki!
Oh! One other thing. Because they've edited relatively recently, ONEUS-1 retains their bureaucrat status. I see that you've already made one attempt this month to reach out to them. That's awesome! For an indeterminate while at least, I'd probably periodically keep trying to get their attention. It can't hurt to have more peeps around! Maybe your enthusiasm will wake them from their slumber!