As @liuwei37645 linked the AEX announcement, maybe the "temporary closed" XCN wallet is related to this.
Here is what they say about the XCN and other six projects: https://www.aex.com/page/news/notice/2017/1110/en_46.html

Maybe is time to search and try to get on another exchange..
stocks.exchange it seems to get some momentum and I think is free to get listed there, but I'm not sure.