Simply click on My Account and use your StuffBak email address and password to log in.
If you did not have a StuffBak email address you will need to use your StuffBakusername@return.me as your login. The password is the same as you had with StuffBak.
If you don't remember your password you can request a reset password on the login page.
Once logged in, you will be able to update your contact information and edit or delete your current activated labels/tags. You will also be able to upgrade your membership to either Silver or Gold service, which will give you full coverage for all your recovery tags.