If you initially created your subscription login with one email address and you want to change it to a new login email address and retain your current configuration and settings, here is what to do:
1) Login to your Webgility Account
2) Select an account from the subscriptions area then click the Add-ons menu heading.
3) In the Users area, click edit next to the user whose email/password login you want to change.
4) Modify the email/password login and click submit
The modification is updated dynamically within the Webgility Account
5) Log in to eCC Desktop with the new email/password login and resume using eCC Desktop as usual.