Myteamfx is a forex broker which allows to deposit and withdraw funds thr BTC and there is nothing new in it. Many renowned brokers like Fxchoice, FXTM and many other allow users to deposit and withdraws funds thr BTC, Fxchoice even allows users to deposit and trade ETH, XRP as base currency, so myteamfx cannnot be labeled as scam if they are accepting and enabling BTC withdrawal. Although I never used this broker for trading forex but they are claiming to be regulated by Canada's Investment Industry Regulatory Authority(Friedberg Direct – IIROC), Australian Securities Investments commission (ASIC) and British Virgin Islands International Financial Services Commission (BVI). I do not think they are scam.