How many email addresses do you have?

If you can't recall the email address that you used for Sync, what about remembering the Firefox Account password?

Without the password your data is useless even if you figure out the email address that you used.

And I suppose you don't have another device connected to that Firefox Account; if you do look at the Saved Logins data in Privacy & Security.

iam forgeted the account because i have may emails but i set unique password so i remember the password but i net the email i cant guess it

iwhy ther was no option >>> forget your email buttom like as forget your password !? :(

That wouldn't make any sense because the email address is the only way to identify the Firefox Account owner / user. Mozilla doesn't know "real names" for Firefox Account owners / users.

As far a Sync / Firefox Account password goes, when the password is reset all Sync data is cleared from the Sync server. A different password can't decrypt the Firefox data saved in Sync; that data would be a useless "blob" of data.

we can say its over >> my all favorites date from 2010 ...had been gone thanks firefox  :(