In order to make a change to your email:
Log in to your Viva Wallet Account.
Select Settings and Profile.
In Business Account Contact Details, select Primary e-mail and write your new email into the field that opens.
To save your changes, select the green symbol of confirmation.
At this point, you will receive a notification email containing a link to your new email address, which you will need to click on in order to confirm the address.
By following the same process, you can modify the System Notification Email if you wish.
If you use the same email in another business account, the email will change there too.