So my Boss NS2 was working fine last night i was using the X connection, However tonight it's not working at all.

turning it on / off does nothing it won't even stop the feedback or anything

I ran the guitar into the input then the amp in the output part and it worked fine, but i can't gate the preamp then can i?

The shit is going on

I tried a different battery and cables.
is the reduction light coming on when you stop playing?

what are your threshold and decay settings (give clock position)