Each cable landing licensee shall submit a certification, within sixty (60) days of [effective date of amendatory instruction 19], that it will not add to its submarine cable system(s) under its respective license(s) equipment or services identified on the Covered List that the Commission maintains on its website pursuant to the Secure Networks Act, 47 U.S.C. 1601 through 1609; except, this condition shall not apply to a licensee that is identified on the Covered List whose cable landing license was or is granted prior to [effective date of amendatory instruction 19].