crashes are expected due to new events that are not scripted well, they were scripted in few days and they didn't predict all exceptions so now it is hard to point what is causing the crash, it is common problem in programming but u usually use some environment that can warn u about that but here that is not possible, it is much complex and harder to predict.
It would be much easier if they focused more devs fixing ragnaros bugs then making Lordaeron better >.<
why website show 2000+people online ????????????????????????????
how are they login ????????????????????????????????????????????????
why not any official interpretation ?????????????
Because the stats aren't in real time, they are refreshed on a timer. It's the same reason you might try to login and get a queue while on the website it shows a much smaller queue.
Either way, we are aware of this and it's being checked so what's causing the crashes can be solved.
I've seen Warmane forum moderators in the "people browsing this thread" So the forum moderators should now be aware of the issue - I assume they will be calling the necessary people on skype to get it sorted.