Ok...
finally i talked whit ROBERT on the Live Chat... but he can't solve the problem 'cause "there are no account with my mail registered".
WHAT???
I'm an old member SINCE JANUARY 2015 !!!!! and problably when i registered wasn't necessary an email...
...but... they know my email because last month 26.01.2018 they send me an email to exchange my cryptocoin before 02.02.2018.
On 06.12.2017 they send me a mail to confirm a withdrawal.
I don't know why they answered me that they don't have an account registered with my mail.
But i hope they solve the trouble quickly.
Hmm. I was able to play on FJ back in 2013 (or 2014, I think), I remember they always asked for an email to register with. Though I am not sure since that is too long ago.
Anyway, maybe consider checking the email you sent them if it was correct. If it was, probably tell them your username that you probably used to play at FJ. They'll more than likely help you out like every person that had had problems on the site. Just please be patient, they will for sure help you out.