We have received your complaint about FXFlat.
Could you please provide some details of your trading in FXFlat (such as: trading account number, withdraw records)? We will try to contact this broker for you.
I was operating on MT5 normally when i depare with a situation where i couldn't open trades. I waited few hours, maybe was their service in maintenance but yet i haven't received any email informing anything. I then went to their live chat which was really rude and unprofessional, didn't explain plus told me you will receive information by email.