Anyone face the same problem ?
What shall I do? or Where / Who shall I report to?
How did you lose it? Have you played hi-low?
You can send PM to owner here https://bitcointalksearch.org/user/wetsuit-154142 and explain to him your problem.
I have no idea, just found that account balance is 60000 satoshi less than I expect.
I am quit sure of my balance amount as I just deposit 32000 satoshi to my account a few day ago and have checked the balance after it.
I think you need to check your hi-low game history. Is there anyone hack your system and they lost your money in the hi-low game. If you don't know how to check then you can write to admin and they can tell you what exactly happened in your account transactions. Did you enable your account 2fa function? If not better you enable it if you're planning to store some coins in your account.