Thank you very very much for your responses , i have one friend from Latvia he bought a package of 500 USDT and said it is profitable. Thats why i asked whether it is used by someone else here or not.
Is he your close friend or someone random you got over the internet 
?If he's your close friend, ask him if has been able to withdraw the "profits". Sometimes such apps and websites tend to lie to people that they have made lots of profits but when time to withdraw comes, one can not withdraw anything.