Withdrawal requires a verification deposit, 20% of the total assets of the account

The netizen I met on IG has been persuading me to invest more. Because of insufficient funds, the netizen posted money to my account, and promised to repay the principal lent by him after making a profit, and I will be able to withdraw the money to my physical bank smoothly. Account, when I want to withdraw money, I received a notice from the platform that requires a capital verification deposit of 20%, and confirmed with the netizen. The other party said that the first time I withdraw money, I need to verify the capital verification to confirm that the account is not a head account or suspected of money laundering. After the verification, the account funds and deposit will be returned ( Within 24 hours after paying the security deposit), if the payment is not made or overdue (within 72 hours of the application for withdrawal procedure), the account will be frozen. After contacting the customer service of the platform, the answer given by the customer service is the same. Is this a normal process?