WASHINGTON — For the past 12 days, a system costing more than $400 million and billed as a one-stop, click-and-go hub for citizens seeking health insurance has thwarted the efforts of millions to simply log in. The growing national outcry has deeply embarrassed the White House, which has refused to say how many people have enrolled through the federal exchange.
Even some supporters of the Affordable Care Act worry that the flaws in the system, if not quickly fixed, could threaten the fiscal health of the insurance initiative, which depends on throngs of customers to spread the risk and keep prices low.
“These are not glitches,” said one insurance executive. “The extent of the problems is pretty enormous.’’ Full story for BostonGlobe.com subscribers.