Is INVADIGM safe?

I played on this platform for a while and earned $30,000. The agent said I'd earned too much and needed to lose some of it, otherwise I couldn't withdraw my funds! Later, I lost nearly $10,000, and the platform still wouldn't let me withdraw. That same day, without any notification, it secretly closed my account. When I contacted the customer service, they acted like scoundrels, saying I violated regulations—each order was less than 60 seconds, considered "instant" trades, and therefore invalid—and wouldn't refund my principal. I wonder, when I was losing money, why didn't they say it was "instant" trades, not frequent trading?! Later, when I threatened to report them to the police, they made me sign a guarantee not to expose their actions, and promised to refund my principal and compensate me $600! I've never seen such a shameless platform! I hope you learn from this and won't fall for their scam!