Similar to other comments I’ve seen on variations of their site. I built up a balance over several weeks. When I tried to withdraw some of it, they put it under review until i sent them $2500 to cover the tax withholding. 1. No was not prior informed. 2. Literally not the definition of withholding. 3. Sounds like every scam i saw in my ten years of banking. Luckily, my initial investment was small.