One in five people who bought insurance through the Washington health exchange has had problems with their coverage and many have been unable to use it.

In all, 28,000 people have been unable to use their health insurance during the past seven months and health exchange officials are confirming that there were some billing problems.

Now these issues have been fixed for about 21,000 people and the rest should have their coverage fixed before the beginning of September.

Additionally, in response to the problems, the health exchange has opened a limited special enrollment period. Those who have had problems with enrolling or making payments through the healthplanfinder website can enroll in coverage outside of the exchange.

This period is going on now and lasts through November 14.

To find out if you qualify and to enroll you can visit insurance.wa.gov.