(in eGiving) Click on 'Maintain registered cards and bank accounts' to get to the MyAdventist site
(in MyAdventist) Click on your name in the top right hand corner, and select 'My Logins'
If you do not see the email you would like to use in the list on the left hand side, select the appropriate option from the right hand side. Use 'Password' for all emails that don't fit into another category.
After following the steps to add or log in to the selected account, click on your name in the top right hand corner, and select 'My Profile'
Click on 'Edit Details...'
Select the email you would like to be your primary email from the drop down list, then press 'Save and Close'