I received an email from NairaEx on the 13th of May, but I did not see it until today after the exchange sent another email that their customers should withdraw their ether and USDT on the exchange to avoid the coin and the token loss.
Whenever and exchange or platform begin to come up with too many changes and announcements such as this, it is always a red flag for me. I understand that the crackdown on exchanges is affecting NairaEx, Luno, Naira4dollar and other exchanges that trade in NGN. Before now self, I have stopped putting my money on exchanges unless when I want to sell which I will just deposit and sell immediately. Just like you said, I will advice everyone to withdraw all their assets from Naira to their private wallet to avoid stories.
It is getting too late but I think telling people can still help them withdraw their money from the exchange. Although, I guess no one is using that exchange among us on this forum, but if you are using it, withdraw your coins. Or if you know someone that is using it, tell the person to withdraw his coins.
That exchange have been moribund for a while but you should not be surprised that many people still use it. Not many people know their way around other exchanges like those of us in this forum that are privy to information of many places we can trade. My colleagues in the office still use NairaEx because it should be one of the easiest and fastest exchanges to buy and sell in the local currency. Before Binance came on board and changed everything, NairaEx and Luno were the most popular in Nigeria.