We sincerely apologize for the inconvenience caused.
Recently, we updated the COSS token from ERC 20 to ERC 223 token.
Kindly provide us with the TXID(transaction hash), exchange/ledger used to deposit COSS tokens, and any other related information. We will try our best to help you and will get back to you as soon as possible.
Thank you for your kind understanding and patience.
If you hold the old COSS tokens on MyEtherWallet, please follow these steps to be able to see your new upgraded COSS tokens at MyEtherWallet:
1) Please log in to MyEtherWallet
2) From the right bar menu choose "add custom token"
3) Insert contract address: 0x9e96604445ec19ffed9a5e8dd7b50a29c899a10c
4) Insert symbol : COSS
5) Insert decimals:18
Meanwhile, you can refer to the following links for information regarding the ERC223 update.