Ads not Working

Hi,
I've launched the campaign named “sidebar gadget” last week and it was working well when I use the keyword "side bar gadget" (space between “side” and “bar”) in the ad description and title. But the meaning is different between "side bar" and "sidebar". So, I've raised an exception while saving the ad that "sidebar gadget" is a technical keywords so, I wanted to use sidebar without space between “side” and “bar”. After raising an exception my ads got saved without showing any error and the status is active. But if I search, Google is not showing my ad. I tried many times and I'm the only competitor for some of my keywords and my daily budget is also high. So, I've changed my ad with space between “side” and “bar” yesterday. I got only one click and after that all my ads (having space between "side" and "bar") got disapproved. I don't know what the problem is. Why my ads are not showing if I am not using the space between "side" and "bar" and got disapproved if I use the space between "side" and "bar". Thanks.