A registration expires at the end of every other year on the anniversary of the registration unless it is renewed as provided in this section. Before a registration expires, the registrant may renew it for an additional 2-year term, if the registrant: otherwise is entitled to be registered; files with the Commissioner a renewal application on the form that the Commissioner requires; and pays to the Commissioner a renewal fee of $50. An application for renewal of a registration shall be considered made in a timely manner if it is postmarked on or before the anniversary date of the registration of the year of renewal.