I've recently learned that livecoin changed their BTC deposit addresses. They didn't inform me that this was happening and unfortunately I've been using the old one. Their support staff have told me that the funds are lost.
We have announced about the change of deposit addresses for BTC well in advance, and then for a whole following month supported the old addresses functioining.
At least twice we reminded to all the customers to generate the new addresses,
https://www.livecoin.net/en/news/view/590 ,
https://www.livecoin.net/en/news/view/620.
All the important information is available at our web-site in the news section, and all the users are informed about all new notifications in the upper part of the username page.
Before starting your trade at our Exchange you accepted the User Agreement, which has a provision, that you would not have any claims to the Exchange if the loss of funds was caused by your own mistake or negligence.
If you don't want to follow the news and you need a long-term storage of your coins, then you can withdraw funds to your personal wallet and send them back when you need this.