AP process time for missing flight credits
The latest "word" from AP is that requests for missing credits will be reviewed within 60 business days:
ALL email requests will be reviewed within 60 business days. Please note it may take up to 8-10 additional weeks for the mileage credit to appear in your account as some partner airlines require time to validate the mileage request.
Sounds like they are so backed up its taking 6 months to process requests!