Wintersnow should prove that is fake broker or not

When I use Trading service at the first time, I registered in Boloni Created FX Co ltd.(as attached 1) After used that Broker for a while, they email me to inform the change of Broker to be Wintersnow(as attached 2) After that, when I requested to withdraw money, Wintersnow asked me to pay taxes(as attached 3,4) and no withdraw happened even I paid some as they asked. If Wintersnow is not a fake broker, they should make a normal withdraw process.