Click here to link your Capital One Rewards account to your Amazon account if they are not already linked https://amzn.to/3nEr6xb
you often have to wait 24 to 48 hours after linking your rewards account before you can "activate" the offer. Check the link in the next step after a few days for eligibility.
If you are eligible, promotion terms will vary by user and be stated on the promotion page ($10 off $30+ or $20 off $40+).
Click "Activate Now" to activate the promotion.
Add at least the minimum purchase amount ($30 or $40 depending on your targeted promotion) of eligible products, sold and shipped by Amazon.com, to your shopping cart.
Proceed to checkout.
Use Capital One rewards at checkout.
Capital One rewards will be temporarily set as your payment method at checkout. To redeem this offer, you must use Capital One rewards from your cash back card for at least a portion of your order.