I already have my own Amazon Prime account, how do I redeem the Amazon promotional code?
If your plan includes a promotional code for 12 months of Amazon Prime, you can keep using your existing Amazon Prime account.
To apply your promotional code to an existing account, make sure you have a valid payment method in place. This promotion is only compatible with a regular monthly or annual Prime account and not Prime Student. If your account does not meet these requirements, you will need to create a new account in order to apply the promotional code.
Enter your code at https://www.amazon.es/prime/promo/landing and sign in to your existing Amazon account.
The 12-month promotional code will be activated once your current subscription expires. If your current subscription expires on 31 March and you are able to register your promotional code before that date, it will activate on 1 April.