Hi mdb,
Once you hit the spend threshold, the bonus miles get posted to your account automatically. If after 6 weeks (mid-February) you see that the miles have not been posted, I'd be happy to look into the issue for you. Please feel free to send me a direct message via FlyerTalk or call us 24/7, toll-free at 800-430-1000, should you prefer immediate assistance.
Thanks and enjoy the weekend!
Kim
Amex Customer Care