The Securities Administrator shall be an agent of each seller who sells, offers for sale, advertises or promotes business opportunities in this State for service of any process, notice or demand required or permitted by law to be served and this service shall be binding upon the seller. Service of any such process, notice or demand shall be made as provided for service upon the Secretary of State under the Maine Rules of Civil Procedure, Rule 4(d)(8).   [PL 1989, c. 542, §5 (AMD).]