Once you have registered, check your emails for the title 'A warm (and fluffy) welcome 🤗', you will need to click on the link on this email to choose the location you wish to redeem the reward!
If you opt for Tesco, you'll receive an email with the title 'Your fresh OG is waiting for you at Tesco', your welcome voucher is attached to a link here which will need to be printed.
For Krispy Kreme shops, the reward should be available in the 'offers section' of your app. You may need to scroll down on the offers page to find it, and then you can add the reward to your wallet.