Unable to withdraw

I can’t withdraw my money first I deposited 500 dollars and gained 12000 dollars and they blocked my trading account stating that I need to upgrade to Gold Trading Account with 1000 dollars which I did immediately. So my account was 13000 dollars after the upgrade so I decided to withdraw but they declined my withdrawal and said that minimum withdrawal limit for Gold account is 30,000 dollars . please help me check if it’s true or false trading app. Thanks you.