The promotional cards are only good for a limited time, make sure you use them before they expire.
I'm still waiting for Costco and CPK credit on my Amex. =/ I never received any confirmation about them. I got an email within a day about Small Business Saturday and see that I did get a $25 credit from that.
You should get the credit within 1-3 days. I've done over 50 sync deals and the only time it took longer than that was for the Panera deal so I called them up and they immediately gave me the credit.
Just give CS a call and you should be good to go.