Breakaway is asking for a 'foreign currency tax fee' before I can withdraw.

I was told by Breakaway that because I made profits in foreign currencies,Ranking of domestic foreign exchange brokers I must pay a $1,500 "foreign currency tax fee" before I can access my funds. This is the first time I’ve heard of such a fee, and it was never mentioned when I first signed up with them. I’ve had plenty of experience with other platforms, and I’ve never been asked to pay any tax fee based on foreign currency profits. It feels like they’re just inventing these charges as a way to hold my funds. I am concerned about the legitimacy of this request. Has anyone else faced something similar with Breakaway? What steps should I take? Should I just cut my losses and walk away?