S View doesnt work anymore

[Blackbeagle]

Wondering if someone can help. This might be real easy. For some reason, my S view doesnt work anymore. I have no idea if I disabled it or not. I wave my fingers over the Sensor and it doesns't turn on the clock/notification anymore. The Verizon store guys didn't know how to enable it again. I'd figure I'd get an answer on here.

Thanks.