Platform technician Xu promised stable high profits, promised stable returns, when in small positions with profits, used various tactics to calm me and not allow me to close positions, when there were small losses, then induced heavy positions and adding positions, also locked positions, when net value was still 5000, in a completely hedged state, deliberately blew up the account, in four days of trading, took 10,000 USD from spreads and fees, suspecting that the technician and platform colluded to eat client losses, hoping to negotiate a refund of the principal