PhemaxCryptotrade told me that I need to pay a $1,700 “final approval charge”

This is Where to open an account for foreign exchange trading?now the third unexpected fee I’ve been asked to pay. They claim it’s required to “finalize” my withdrawal, but why wasn’t this mentioned when I signed up? They say this fee is refundable, but I’ve heard that line before, and nothing ever came of it. I feel trapped and frustrated. This feels like a scam where they keep inventing fees to delay payouts. Has anyone else been asked to pay a “final approval charge”? How did you resolve the issue?