A renewal application for each license, permit, or registration shall be mailed to each licensee, permit holder, or cosmetologist apprentice at the last known address. A licensee, permit holder, or cosmetologist apprentice shall submit each application and the required payment at least 14 days before the expiration date of the existing license. An application that is incomplete or is not accompanied by the appropriate fee shall be returned to the applicant. A registered cosmetologist apprentice is limited to two renewals. A limited practice apprentice registration is not renewable. Prior to the expiration of each 2-year term, a licensee shall provide proof of satisfactory completion of continuing education requirements.