Unless you’re in one of the few states using it, you may not have heard of VAMS. But it was supposed to be a one-stop shop where employers, state officials, clinics, and individuals could manage scheduling, inventory, and reporting for covid shots—and free for anyone to use.

Instead, “VAMS has become a cuss word,” Marshall Taylor, head of South Carolina’s health department, told state lawmakers in January. He went on to describe how the system has badly hurt their immunization efforts so far. Faced with a string of problems and bugs, several states, including South Carolina, are choosing to hack together their own solutions, or pay for private systems instead.

Clinic workers in Connecticut, Virginia, and other states say the system is notorious for randomly canceled appointments, unreliable registration, and problems that lock staff out of the dashboard they’re supposed to use to log records. The CDC acknowledges there are multiple flaws it’s working to fix, although it attributes some of the problems to user error.

As for Price, she waited at the hospital for 45 minutes before getting an administrator to actually cancel the appointment they wouldn’t honor. “She said they keep trying to get taken off the list [of vaccine sites], but VAMS puts them back on,” she says.