Is clone cd illegal?

it seems impossible to get a copy of it…what happened?

Is CloneCD illegal?

In most countries, no. In Germany, arguably. In the UK from 31 Oct, arguably.

What’s happened to it?

It’s been sold to Slysoft (based in Antigua); new version “promised” soon. You can get it in the meantime (and older versions of it) from http://www.oldversion.com/.