Although this has not happen to our exchange where we put our funds for a long time, this should prove that its not safe to be there for months or years, you have to secure your money, or tokens/coins to your hardware wallet, or electrum wallet etc since you have full control unlike CEX.
Earlier there is a news that Coinex have been hack, where the hacker transfer and drain the wallet, with ETH, Polygon, Tron etc, i think this is the first time this exchange has been hack, i say i have coins there but no value, but if you have lots of eth and others thats is a major concern, since we don't know if they can refund the loses.
so to be safe store your bitcoin and other coins to safe wallet, like hardware wallet etc.
Coinex claims that the hacking was done due to the phishing site. The exchange does not tell about whether they recover the loss or not, but this is a reminder for those who store their fund in the exchange. This hacking shows that even a reputable exchange can be hacked, it is not safe for the users to store their funds in the exchange besides storing their funds in their wallet.
this is the link of the news :https://cointelegraph.com/news/coinex-crypto-exchange-suspected-hacked-crypto-moved
Also, Op you gave a link for the verification but it does not work You made a small mistake in it. Please give a space between : and http so it will be good and yeah it will be start working.