date of service of adjudication order - Goods and Services Tax - GST

Sir, our client received adjudication order by speed post on 16.09.2023 but on the GSTIN portal it was uploaded on 14.09.2023 (order GSTR-07 ), we filed appeal on 15.12.2023, whether it is out of time if yes whether we can file condonation request along with physical set yet to be submitted. Plz guide