Ok, with the EOS launch date coming up at the beginning of June 2018, you need to make sure that your EOS tokens which are on the Ethereum network are mapped to the new EOS network.
You should complete this before the end of May to make sure you have it done on time.
Otherwise your tokens will become WORTHLESS when the EOS network becomes live.
The easiest way to achieve the mapping is by moving your EOS tokens to the Binance exchange.
Binance will do the mapping for you.
However, be aware that there is always a risk of having your tokens on a third party exchange rather than holding your own private keys.