Ok after some minutes of conversation on Telegram with OP, i confirm that OP is a scammer trying to motivate you to create an account of a shady fake exchange. He doesn't use BTC official network ''for security reason'' and wants only to do a internal transfer on his fake exchange.
I cannot say that I am surprised...

And I guess there goes the trick starts, after faking the deposit to you with that exchange. As you try to withdraw, there will be a message that you're required to deposit.
That's the usual trick that these scammers do.
Anyway, I'll quote the picture for others to see it.
It's a very old trick with a new twist I almost fall into something like this it was a casino where the admin allow me to win but before I can withdraw my winnings I should first deposit to confirm the address, where they are going to send my winning, now they are using the Ukraine situation to make their offer valid, I never trust newbies who's invitation is a private conversation through telegram, with the evidence posted OP deserves a red trust to warn the community.