Audit is regularly performed every 4 hours, but first time 4 hours AFTER service start.
So, general rule is: insert a smart card, enter PIN and ensure computer is online for at least 4 hours. If you reset the service earlier than 4 hour, timer is reset. If the card is near its limit, the period is shortened to 4 minutes.
Also a general advise is: Do not click on Start Local Audit unless you know what you are doing, because it might interfere with automatic remote audit.

If the problem persists, then it could be some more specific case, in which case our support should analyze your troubleshoot logs.