All NACA offices and departments are open their usual hours even with the Covid-19 outbreak. Member Services is open 8:30 am to 5:30 pm Eastern Time Monday through Friday.
There have been some additional staff meetings and conference calls over the past week as the staff deals with continuing normal-as-possible operations during the outbreak. You may have tried to reach them during one of those meetings and gotten the message. Keep trying to reach them. Your persistence will pay off.