First of all, you should probably move this topic where it belongs - the Trading Discussion board.

Secondly, to answer your question, that sounds incredibly fishy to me. I've been around the block a bit, and I've never seen a real trading platform demand more money just to let you withdraw what's already yours. It just doesn't make sense. I'm worried you might have gotten caught up in a scam. Because, from where I'm sitting, it really looks like you might have. Are you absolutely certain this platform is legit?