You can update your store preference here
Unfortunately, you can not change the email on your account. If you would like to use a different email please create a new account. Alternatively if you have an email you forgot the password to, please follow the guide below in resetting your password.
https://help.umart.com.au/hc/en-us/articles/115002784607-How-do-I-reset-my-Umart-account-password-
