Hello,

Please tell me which wallet you are holding ETH?
If it's in blockchain.info or Myetherwallet, please follow instructions:
1. Click button "Buy now" with the one you want to buy.
2. You will see the ETH address, which allow you to send your ETH to.
3. Send correct amount ETH from your wallet to ETH address in EBC.

Please let me know if it's clear for you?