Hi! This is an odd ghost of a bug that has happened to us occasionally as well - it seems utterly unfixable. The building plan has three sitting idles for the settler, one on the bed, one by the table, and one on a vault crate by the power armor station. Once in a blue moon, one of these won’t rotate right and the settler sits in air, either in the middle of the plot or outside by the entrance.
That said, your plot looks awfully empty for level 2 or 3 (which spawns the power armor station), there should be lots of clutter on the shelves, icecream on the table (L3), and the mentioned vault crates. So you could try to 1. refresh the plot, 2. Do a manual download of our mod (unzip and drag the files to Data).