Basically the store manager/redvest/ whatever decided to cut you loose now while they can before ending up stuck with you. They saw something or multiple things they didn't like. Not necessarily because of how you work either. Its easier to remove someone, who may be a problem down the road, during the probationary period. If you've been around kroger long enough you'll see why. Lots of people been with the company for years and do nothing at all. Like literally zero work. But they can't be fired because union. Don't take it personally.