Yes i think there is a problem with novaexchange because nova not scanning his Timereum deposit addresses but instead scan always Eth Timereum contract address. But after new TME token is realeased there will not be any more problem with any legit exchanges. We have just to wait until dev finish new TME token.
So, why TME not available on coinExchange or Yobit? Or any other exchange? Because problem with TME.