Visit https://members.vitality.co.uk/partners-and-rewards/caffenero and login with your Vitality account credentials. Link your accounts via the ‘Find Out More’ button. On the next page simply ‘Sign-in’ with your Caffe Nero/Yoyo account credentials and your accounts will be successfully linked.
If you signed up using your Apple ID, you will find the email associated with your Caffe Nero account in your app under Settings > My Details. You can either use this email to link your Vitality rewards or you can change the email address to the one you prefer. To get the password associated with your Apple-ID or the new email you have created, kindly contact firstname.lastname@example.org and we will send you a password reset email.