Whenever you see Qiwi, Yandex money, Tinkoff, e.t.c... Consider it as a Russian or Ukrainian scam and stay away.

Now the question to OP of cryptex.

Is your exchange LEGAL ? Could you show us the REGISTRATION documents, like where is it registered and who is the owner ? Victims will need that information to proceed with LEGAL ACTION against you, due to online theft and fraudulent activities.