The Act Governing Electronic Payment Institutions Article 14

An electronic payment institution shall notify the competent authority in writing within three (3) business days from the date it commences operation.
中文原文 電子支付機構管理條例第14條
電子支付機構應於開始營業之日起算三個營業日內,以書面通知主管機關。

English translation for reference only; the Chinese text prevails. Not legal advice.