So Many Users Are Facing This Problem This time for your kind information if you are new please check risk assessment or Appeal For your Problem Your Problem Will be Solved As Soon As Possible. All Users If You want in future You Don't Face Same Problem Like these People then Don't Do these things.
1.wash trading
2.self-dealing
3.multiple accounts
4.manipulation
5.unusual activity

in short one thing if you are doing trade in your account and then send same USDT to others account and trade there also then you can get this problem.
So if you want solve your problem don't share your USDT For trading in your second account or multiple accounts you will get restriction so be aware be safe. if you've any doubt still you can ask me freely don't worry.