I just signed up using the 50k link on the wikipost and no where did I see the 50k miles offered. Did I do something wrong?

Since the T&C didn't mention 50k in miles, I have a feeling that I will end up with zero miles. Can I call them and have them add a promo code to my application? If so, what promo code can I give them? Any ideas on how to get the 50k or even 40k miles?

I don't want to end up with a credit pull and no miles.

Thanks in advance for your help.