Help - Forgot fitbit email id .

Hi pals, I was not using my fitbitOne for a while and forgot my mail id. To sync with MFP it needs email id and password. I tried to search online in fitbit site, but nowhere resetting email id option is not there. If anyone has any idea or link, please share.

Thanks a ton in advance.

PS: I have already posted this but looks like it was in wrong board, so trying here again. Thanks.