Hey, the anchor IS the center of the ring. I'm not even sure the rotation matters but i built those wierd grey alignment bars just in case. Gonna look into this next week. The alignment bars are there when you first setup, but they are tiny because you're scaled like a giant. It's a bug, I'll fix.
I'm not entirely sure if the issue isn't something else entirely. Can you try and anchor that isn't directly up against a wall?
Part of me feel like step one of setup should be "find and test a good anchor" because it's really the root of everything else. The logic is straightforward but there's just wierdness with the way the controllers behave sometimes.