HI, please come to your question and to the right of it is EDIT, please edit your email address out as this is a public forum with spammers and bots.

Then your data if any is lost and you will have to make a account with your new Email address.

Please let us know if this solved your issue or if need further assistance.

Hello, this does not solve my problem, because then all stored passwords and usernames of several pages are deleted. I need access to my previous account again, but can not enter it because it was locked

Hi, That is correct. It is called Security. If the email address you registered with was working or not you can get in with the correct info. Or from another Device. Which you do not speak of. Or it may have been edited out.

Firefox Support has no access to your information or your Data.

Firefox Sync as not a back up service. This is not what Sync is designed to do. The Firefox Sync service takes a copy of the data you wish to include and transfers it to a second device (typically a mobile device such as a tablet or a telephone) running a copy of Firefox. The storage in between all attached devices is both temporary and fragile and is not stable enough to be (and is not designed as) a reliable backup service.

If you have a copy of your Firefox profile for desktop Firefox, you may be able to recover your bookmarks and other data. Please have a read of these article.

• 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

If you have a copy of your data on a mobile version of Firefox, please follow these instructions to connect it to Firefox Sync to copy your data.

• https://support.mozilla.org/en-US/kb/how-do-i-set-sync-my-computer#w_connect-additional-devices-to-sync_