Cherif Kamel had been struggling for weeks to secure health insurance through the state's online marketplace. He thought he had done it at the end of December. He chose a plan and delivered his first premium in person, only to find out days later that the Massachusetts Health Connector, which runs the marketplace, had no record of his enrollment. Once a national model, the Connector has frustrated consumers for months. Its new website, overhauled to comply with the federal Affordable Care Act, has locked users out of their accounts and delivered confusing error messages.
