I tried selecting individual points, group selecting, lasso, selecting the same points but on different splines, and so on. Is there some configuration? I have lots of other 5-point patches that worked fine. Why not this one ... for me, at least?
I haven't downloaded your model, but usually when I run into 5 pointers "not taking": I select the 5 cps, then hit "." twice (to deselect, reselect). Green Donut should show up. When that doesn't work, I select the 5 cps, hit "hide" so only those cps show, then reselect (with lasso, etc). Donut should show up.
However, what I am noticing on your model is a reluctance to use hooks for ending splines. I usually reserve 5 pointers for those places where I want to "extrude" an appendage, ie, change direction of the patches, or the 5 cps are not co-planar. You have situations where the 5 cps appear to be co-planar, and in those situations it might be better to use hooks.