The best solution to this is to contact the support, all we can give here is just give our suggestion and opinion but it's only the exchange itself can answer you. You are sending a big money but you did not double check everything, we are in crypto man where transactions are irreversible, I am not really sure with USDT but most exchanges would tell you to make sure it's the specific coin or token, otherwise you will loss your deposits.

IMO, if transactions are successfully deposited to their account then I guess you have a chance to recover it,  but it's up to the exchange if they are willing to help you, if so,  they will give you the proper procedure to get your money back.

Maybe it's time for yobit to participate here and change the image of the public a little bit on why they should not be called a shitty exchange.