Most codes are online-only, but some retailers offer in-store codes or allow you to show online codes at checkout. Check the coupon details for in-store eligibility, or ask store associates if they accept online promotional codes.
First, verify the code hasn't expired and check for minimum purchase requirements. Ensure you're entering it correctly and that it applies to your items. If it still doesn't work, try another code from coupcheapie.com or contact the retailer's customer service.
Cashback offers provide a percentage of your purchase back after checkout. These work alongside coupon codes - you can use a discount code and still earn cashback. Check coupcheapie.com for retailers offering cashback programs.