As I said I upgraded mid last week. Spent on my gold card that was considered "platinum," and the points posted two days later. Also as I said I called them and told them I was targeted. However, IME, it seems that even if you weren't targeted they would have given it to you. If anyone wants the phone number I called it is: 1 (888) 814-9099. Just try telling them you got a letter in the mail and it would not let you upgrade online, and you were wondering if they would match you over the phone?
Also they never even asked for the offer number.