Nothing else you can do but to wait until they fix the issue.
Last September 4, they disabled PASC and LBC wallets because of deposit and withdrawal issues (
source). On the same day, PASC wallet has been re-enabled while no update about LBC wallet (
source). Most likely the problem with LBC wallet has never been resolved from that moment.
Worst is that LBC is included in the coins that are scheduled to be delisted on Poloniex. LBC withdrawals will permanently be disabled on October 28th (
source). I hope by that time, your LBC is already out of the exchange. Good luck!