My clicker won't light up green when I answer a question even though I'm on the right channel or it won't let me set a channel.

Sometimes clickers get grumpy just like people.  Your clicker probably just needs to be reset, just like you do during spring break!

If your clicker is being wonky (that's a technical term) the best thing to do is to take the battery out for approximately 10 seconds and then put it back in.  This resets the clicker to factory settings and fixes most of those quirks.

To remove the battery you'll need a small Phillips head screwdriver like the one above.  The battery compartment is on the bottom on the back of the clicker.