If they dint accept your church marriage certificate, then they would have sent your file back by post, please check with them.
I have received AOR and still they returned my file, because i dint have Government Birth Certificate (1970 Year Born and their were no Government issued at that time) so i submitted my Baptism Certs as replacement, but the request letter was to submit Affidavit instead.
I have re-applied in June 2017 and received AOR in August 2017
I am not trying to scare you bro, but is is a fact.