Realy? 
They was give me possibility to withdraw my MONA coins? When? I do not know that
They was give me possibility to withdraw my MONA coins? When? I do not know thatFrom what I have read Livecoin granted you access to the account and possibility to do whatever you like with the Mona coins and other holdings.
...I received a message from the livecoin technical support service today with a statement that I can withdraw my funds within 48 hours, after which my account will be permanently blocked!...
But there were problems with the Mona chain and you were not able to withdraw. If you are telling the truth and I have understood it correctly of course.
...I withdrew all the funds that I were available, however there is an issue with Mona coins. Currently, 720 Mona coins remain on my account balance...
Additionally, Livecoin is still open to assist you and to your suggestions, despite they don't have to but try to do all what possible to resolve that support issue.
...Several solutions of this issue were offered by me to the exchange, right now I am waiting for an answer...
That all quoted above are your words so what are you trying to imply me here?
...If this exchange is so good, then where are my Mona Coins?!!!!!...
Sorry, I don't know your case so I can't comment on your question or provide any useful answer. Just wanted to let you know.