Unable to withdraw and freeze my account. Now, there is 51705 US dollars in the account and I cannot operate at all

On November 11, 2021, I submitted an application for a withdrawal of 31,500 US dollars. Later, they asked me to withdraw 10,000 US dollars every month until January and I agreed. I left 20,000 U.S. dollars in the platform for further operations. Up to now, the funds in the account plus the 10,000 U.S. dollars on the way to withdraw make a total of 51,705 U.S. dollars, but on December 3, I found out that my account has been disabled. I had deposited a lot of money into this platform before, but I have not got my principle back yet.