The server I was hosting it on was choked for resources and the explorer was using up a lot of cpu power for some reason and degrading performance of the pool running on the same server, so I have shut it down. PoSWallet has an explorer that you can use.
It does not allow address exploring (like
https://blockchain.info/home does for BTC). Is it possible for Vsync, at least? I can try to make my own explorer (but cannot promise, of course

).
Iquidus explorer (which is what I was running, fairly easy to set up if you know what you're doing) supports it.