The rendering function is online... Can you explain a little bit more what the problem is?

Yes, i saw the render page is showing "online", but the right hand side the render tab, the render button is disabled.

The render button works for me, and it's not disabled anytime. Have you changed any settings and if you did, which settings?

OMG! the button just comeback right now! i use the default setting, anyway thanks for your replied.

I have the same problem. I cannot rendering, the button not active, and I have a stuck rendering method, but in infinite loop.
how can I give a notice of this problem?