No profit, no withdrawal

I opened an account on the TRI platform and deposited USD7,900. At the beginning, I lost almost USD3,000 because of bad operations. After adjusting my mentality, I made up for the loss and made a lot of money. Suddenly the platform froze my account and said that I violated the rules. I don’t understand what the illegal operation is. Then I thought they were unreliable, so I withdrew the money. They said that I had violated the rules and would freeze my withdrawal for three months. I was very urgent, because I asked my sister to invest the money. But there is no way. After waiting for three months, now the profit is not given, and the principal is not withdrawn to me too.