Update: When you follow the link you may receive an error message. However, if you go ahead and manually complete this step and change your 1-Click payment method to an eligible Citi Credit Card, you should still receive the $10 coupon. Good luck!
Amazon is offering a $10 Amazon Credit for Free when you change your 1-Click Payment Method to an an eligible Citi Credit Card.
Note, link must be viewed from a mobile device.
Login to your Amazon account
Click here and click on the “Change your 1-Click setting” button to your Citi credit card.
A $10 discount will appear on your next purchase of qualifying products from Amazon.com with your Citi card.
Note: Excludes Gift Cards, Kindle eBooks, instant videos, MP3s, and all other digital downloads and content. Credit may be redeemed in one or more orders. Must redeem credit by October 19, 2014 at 11:59pm PT. Refer to the forum thread for additional details.