I have several luna classics on the exchange but now the luna balance is no longer in my wallet?
has anyone experienced something similar?? exchange I mean a tokocrypto.
You should communicate with the exchange support about your missing LUNC. If necessary you can file a ticket about the incident. I have my LUNC on Binance so I don't have to worry about my stash. Even though the trading is paused, I can still see my LUNC balance in my account.
Contact the support of the exchange, a possibility is that Luna classic is no longer going to be supported by them and they are not displaying Luna classic anymore, however such a thing would have needed to come with an announcement that was the case, so they could give their clients enough time to get the coins out of the exchange, the other possibility is that you were hacked, since both of them have to do with the exchange and not with your own actions then it is best to consult the support so they can clarify you what it is happening.
Aside from the announcement, they must give their users a chance to withdraw delisted token. They should give an ample amount of time, a time frame reasonable enough to let busy users withdraw their LUNC.