When you say it's glowing, do you mean the light on the battery or the coil in the atomizer? If the coil glows, it is working. Does it get warm at all?
How long have you had it? They can burn out in as little as a week or two if you are unlucky. Mine have lasted an average of two weeks.
If you rinsed it out, have you given it time to dry? I don't think they function when completely wet with water, although I could be wrong about that.