I try to use online version of Sweet home 3d in Google Chrome and Mozilla and get message "Java Plug-in is not supported by this browser. More info"

Java is installed, I happily use local Sweet home, and even if I install new version on page https://java.com/en/download/win8.jsp - nothing happens.

It work in Internet Explorer, but this browser too sluggish

What could be the problem?

Yours, Daniel