Well the QT client has no active connection to Antcoin Network.
The address listed on that wallet is recognized by Antshares/NEO blockchain. Im trying to find the original thread where I saw that wallet so that I can linked if it's really can be linked to the NEO.
I found this old thread about an antcoin, but it's in Chinese. You have to use google translate to read it. However, it might be a different antcoin to the one the OP has.
https://bitcointalk.org/index.php?topic=379338.0This is a google translated quote from it that includes a wallet download link. Unfortunately I don't know whether that link is safe or not.
One of the posts in that thread says it's a scam.
This is a scam!
I mining 3.000.000+ ANT today, but they have updated the wallet, remove all chain blocks and silent and not talk about it to people.
Old wallet does not work. And now I do not have 3.000.000+ ANT
I'm not the only one who has been cheated
There's another antcoin thread in English with a different baidu link to a wallet download, and a different website link.
https://bitcointalk.org/index.php?topic=1408077.0There aren't many posts in either threads so they might have been scam attempts.