OtterBox Defender series. Cause of Multiple Issues.

So i recently got an OtterBox Defender series case for my iPod touch to keep it a bit more protected. After puting it on, IIrealized that my back faceing camera is unresponsive, and so is the front faceing camera. Weather I use the included camera app, or Camera+, it doesent work, at all.

Anouther issue wouldbe that the top left hand corner of my iPod touch...is extreamly... sensitive. Like if I touch it with a little bit to much force, it looks like it distorted, and blurs. It seems like it's about to crack if i press it.