Maryland Code, Insurance § 19-111

(b)(1) Except as provided in paragraph (2) of this subsection, an insured that has failed to give an insurer a sworn statement in proof of loss or a written notice as required by an insurance contract is not prevented from recovering under the insurance contract.

(2) An insured may be prevented from recovering under an insurance contract if the insured fails to provide the sworn statement in proof of loss or written notice required by the insurance contract within 15 days after receiving the insurer's written request for the statement or notice.