[i-am-cjc]

I had this problem, it would charge and detect the keyboard was there (on screen keyboard wouldn't appear, but keyboard didn't input anything), It was down to the clip around the pins not being clipped in, so it was effectively pushing the case away from the pins. I had to give it quite a squeeze for it to pop in.

Although to be honest, after using mine for a month I gave up for various reasons such as upgrades breaking things.