(AP) — The new, federal health care marketplaces are off to a bumpy start in Nebraska, with computer problems that have prevented consumers from signing up for insurance right away.

Roger Furrer, executive director of Community Action of Nebraska, said Tuesday that the federal website wasn’t allowing users to complete the enrollment process. Staff members in the nonprofit’s local offices have been rescheduling appointments, and some health centers have resorted to paper applications.

The six-month enrollment window opened on Tuesday. Furrer says he expects the problems to clear up after a few days, following an initial burst of website traffic to healthcare.gov, where consumers can access the marketplace.

Consumers who enroll through the marketplace won’t be insured until Jan. 1 at the earliest.