Confused.com £20 sains voucher code too long for coupon box?

[RedPandaClaws]

Anyone got a £20 sainsburys voucher for using Confused.com?
It says it is an eGift and comes with a card number and pin, but how do I use it for my online shop? The card number is too long for the sains app coupon code box, I'm stumped??

I think that box is only for money off coupons, not gift vouchers. Try it on the website version?

Thank you! Yes you were right, if I went to the website, there is an extra option at checkout that is not in the app! You have click the gift card button and then "convert it" into a coupon!
It's so incredibly complicated to claim the money... I'm sure most people give up before they get to the end of the process!