I was blacklisted by the agent, with no access to withdrawal and the website

I, along with my friends did earn thousands of dollars over the platform during the past few months. However, I failed to log in the trading app this morning with the app’s notification of being unauthorized. I tried to log in the website but failed because of wrong account number and password. When trying to revise the password, it show me the customer account didn’t exist. It seems that other customer service personnel and agents in this platform are still there for customers. Our agent only, with the account 3331332350, is missing. He blacklisted our platform and QQ accounts. We suspected a bet between the agent and us. He refused our offer of adding his QQ account.