I have just opened an account day on ad words and I tried to redem my voucher but it stated :We are sorry, you are not eligible for this promotional code for the following reason: Your account is past the maximum age limit specified in the offer details.
Why is this?
Re: Voucher problem
From where did you receive the promo code? Did you read the terms and conditions attached with that promo code?
Normally, you will have to redeem the promo code within 14 days of opening your AdWords account.
You can find more possibilities when you are not able to redeem the code here: https://support.google.com/adwords/answer/126179?hl=en&rd=1