https://support.mozilla.org/en-US/kb/change-primary-email-address-firefox-accounts As per the bottom of the URL please follow it's directions. Please Follow the URL instructions as nothing can be done from here. Please explain the issue and wait till get sent a email, you will have under 24hrs to make the account or what ever it is as I do no use it. Always : *https://support.mozilla.org/en-US/kb/back-and-restore-information-firefox-profiles *https://support.mozilla.org/en-US/kb/export-firefox-bookmarks-to-backup-or-transfer Please let us know if this solved your issue or if need further assistance.