Just a quick heads up before a influx of spam on my steam or in this section: Yes, the server is crashing. Yes, Z:R broke a few days ago. No, there's no fix for now. What do we do about it? Really just wait for now, some people are working on a fix for now but the problem seems to be quite deep.
A little note: it seems it crashes very periodically, meaning it takes some time to crash, this is mostly a heads up if you ever happen to see the server crashing.