Downloaded MT5 through the invech corporation platform. After completing the activity, the platform disappeared completely and could not apply for withdrawal

Introduced investment through ig, and downloaded MT5 from the invech corporation platform page. In the beginning, I made a little profit, and then I had to become a gold member if I wanted to withdraw money to participate in the anniversary celebration. The notice required you to pay 20% of the tax. After the payment was completed, it was said that there was a late payment fee that had to be paid before the withdrawal could be completed. When it was almost completed, the platform disappeared completely, and could not apply for withdrawal, and the people I knew disappeared.