Coin Market Master requiring me “transaction approval charge”

This fee was never disclosed when I opened my account or Russian foreign exchange trading platformfunded it. I fulfilled all their KYC requirements and was confident in their legitimacy until this sudden demand. They refused to provide written proof or policy documentation when questioned. It’s obvious that the fee is fabricated to block withdrawals and extort additional funds. I feel duped and warn others to avoid this fraudulent platform, which operates nothing like a real broker.