IMO, the polymer Kahrs are not a good choice for anyone new to auto loaders period. If you're wanting a small reliable auto go with one of the mini Glocks G26 or G27. They're a little chunky in the grip, but the reliability and performance is hard to beat!
I like my CW9 big time, but If I was new to autoloaders when I first got it and the round would nose dive when I tried to manually rack the slide, I'd be at a loss too. If this is a mag problem or a break-in problem, for someone new to pistols it could be a trying time to find the confidence needed for the CC of the pistol in question. YMMV