Note, must use a smartphone /w a valid MasterCard payment
Using your smartphone
Locate your browser of choice (Google Chrome for best results)
While in browser, change into Incognito/Private Mode
Click this link (or copy & paste into browser)
A promo page w/ “We’re sorry page will appear” on the browser
Scroll to the bottom of the page and click on “Already a customer? Sign In”
Log into your Amazon account
The $10 Off at Amazon promo page will then be active
Click on “Change your 1-Click setting”
Your payment should change to a valid MasterCard payment, and a $10 Off $10+ credit will be applied to your account.
Note, if you do not have a valid MasterCard payment, you must add one to your account.
$10 Credit Towards Next Purchase at Amazon with MASTERCARD