My most recent flight did not credit, I think I stuffed up with the retro claim too ... as I put in the flight departure date as originally booked date, but flight was delayed (via reschedule, not just rolling delay) such that it departed on next calendar day. This is message I got:
UNSUCCESSFUL - PLS CHECK FLT DETAILS JQ 008 ERR 29MAR18 SIN/MEL
Will have to go back and resubmit for 30MAR which is when flight actually departed. Should have known better!