Municipal issued c1 notice to society. but the notice was misplaced and late intimated to member

You cannot claim innocence of law, if the letter was misplaced then you may give an affidavit with the reasons that why you were not able to comply with the demands made in the notice, if the authorities are conviced your explanation in the form of an affidavit, may be accepted.

Approach and request concerned municipal authorities for a copy of notice and proceed as required.