You can update your details in the app by tapping the profile icon bottom right and "Personal details". Here you can update your address, phone number and email.
If you want to update your phone number please send us a message through the app and ask to speak to a customer support agent
If you want to change your email, make sure you enter the correct one. You will now be signed out of the app automatically, and must log in again. If you report an issue to us (etc regarding a refund), we will contact you on the email you have registered. If the email is incorrect, we will be unable to assist you.