No you're not.
The Use/Store switch is a very common topic of conversation around here. We've all been guilty of having it off when it should be on.
Yours is just more of an enigma because of the light that will illuminate either if you're plugged in or if you're in use.
I've found that for things like that on the RV before I ask someone I cycle it a few times to make sure it is doing what I think it is doing