Why Is My Coupon Code Not Working?
Among the most common reasons a code doesn't work — it's expired, there are exclusions, it's non-transferrable and, my favorite, just because it doesn't.
A hacker can brute force the coupon code field value by trying all combinations of alphanumeric values of a certain length (usually 4 to 10 characters). Easier said than done, this technique is possible but strongly depends on the hacker's available processing power.
Hacking Online Coupons - Trustwave
To use a coupon, click on the offer, and a window will appear where you can copy the code. When you check out on the store's website, paste the code in the promo code field. Stores sometimes call this a promo code, but it is also known as a promotional code, coupon code or, discount code.
How do I use a coupon code? - RetailMeNot.com
Is there a coupon site that actually works?
Coupons.com This coupon site has it all, from printable coupons you can use in-store to online promo codes and even cash-back offers for all your online shopping needs. Here, you can find savings for thousands of stores and products all in one place.
Best Coupon Websites, Browser Extensions and Apps
Why does my promo code say invalid?
This message means that the code has either expired or has been entered incorrectly.
I am seeing a message that says my code is invalid, what does this mean?