The Lincoln-Lancaster County Health Department's online COVID-19 vaccine registration form is experiencing technical difficulties. The department says the problems are being caused by an extremely high volume of users. They say as of 8:30 yesterday morning, 100 people were trying to register every second. As of 9:30 a.m., more than 11-thousand people had registered. The department says pages may take longer than normal to load, and those who are unable to get through should try again.