I'm having a similar problem, I posted it here:
I wonder if there was a cloud update that has been causing this?
Sorry for the issues you're having reconnecting your WiFi point. I'm sure that's frustrating and confusing. Do you happen to see any status lights on the point when you plug it in? If so, what color do you see, and are the blinking, are they solid, or is there some sort of pattern to them?