Require to pay tax to withdraw

Starting from 2/18, about 240,000 USD was deposited successively, and until 5/15, the accumulated income was about 260,000 USD. During the period, there were attempts to withdraw 3,100 USD, but all of them were withdrawn normally. As a result, due to capital demand, the application for withdrawal of 10,000 USD was made. USD, I received an official mail notification the next day, and I needed to pay 20% of the income, more than 50,000 USD, and then the progress of the withdrawal was stuck in processing. After contacting and inquiring according to the official line account paid in the letter, replying that due to the withdrawal application process, a tax payment certificate is required before the withdrawal can be made.