Are you watching your line, or waiting to feel a bite? It took me a long while to get it into my head even after being told multiple times, but if you wait to feel a crappie bite, you've missed most of them. Also could be a jig head weight thing, or a jig size thing. Yesterday I could only catch them on 1 1/4" baits. They wouldn't hit a 2" bait. The day before in the same spot, they'd eat anything you put in front of them.
They're crappie, they're finicky and I hate them, but I love them. LOL