An order of approval of a newspaper shall remain effective from the time of the entry thereof until the approval be terminated by a subsequent order of the court, which may be done whenever it shall be brought to the attention of the court that the newspaper is no longer qualified as a legal newspaper, and after notice of hearing issued by the clerk and served upon the publisher, at least ten days prior to the date of hearing, by delivering a copy of such notice to the person in charge of the business office of the publisher, or if the publisher has no business office at the time of service, by mailing a copy of such notice addressed to the publisher at the place of publication alleged in the petition for approval.