Unless a license is renewed for a 2–year term as provided in this section, the license expires on the first June 30 that comes: after the effective date of the license; and in an even–numbered year. At least 1 month before a license expires, the Board shall mail or electronically transmit to the licensee: a renewal application form; and a notice that states: the date on which the current license expires; and the amount of the license fee. If an electronic transmission under paragraph (1) of this subsection is returned to the Board as undeliverable, the Board shall mail to the licensee, at the last known address of the licensee, the materials required under paragraph (1) of this subsection within 10 business days of the date the Board received the notice that the electronic transmission was undeliverable. The failure of a licensee to receive the notice for which this subsection provides does not prevent the license from expiring as specified under subsection (a) of this section. Before a license expires, the licensee periodically may renew it for an additional 2–year term, if the licensee: otherwise is entitled to be licensed; pays to the Board a license fee set by the Board; and submits to the Board a renewal application on the form that the Board provides. The Board shall renew the license of and issue a renewal certificate to each licensee who meets the requirements of this section. The Board shall include on each renewal certificate that the Board issues: the date on which the current license expires; and the signatures of the chairman and secretary of the Board, under seal of the Board. The Secretary may determine that licenses issued under this subtitle shall expire on a staggered basis. The Board shall adopt regulations to require a demonstration of continuing professional competency for a licensee as a condition of renewal of a license under this section in accordance with the following: continuing professional competency requirements do not apply to the first renewal of a license; if a license expires on or before September 30, 2012, a licensee is not required to fulfill the continuing professional competency requirements; if a license expires between October 1, 2012, and September 30, 2013, a licensee is required to fulfill 50% of the continuing professional competency requirements as provided in the regulations adopted by the Board under this subsection; and if a license expires on or after October 1, 2013, a licensee is required to fulfill the full continuing professional competency requirements as provided in the regulations adopted by the Board under this subsection.