If an applicant or licensee receives from the Commission a written communication requesting a response, the applicant or licensee shall respond in writing within 30 days of the date of the mailing. The Commission shall send a written communication by first-class mail to the last address furnished to the Commission by the applicant or registrant. It is the responsibility of an applicant or licensee to notify the Commission in writing if there has been a change in an applicant’s or licensee’s address. Failure to respond as required by this regulation may be considered by the Commission to be a violation of Business Occupations and Professions Article, §16-701.1(a)(7), Annotated Code of Maryland