Hi there

Please refer to the following URL.

In there, how I can create the thread in Reviews?

that’s a Disqus add-on or widget

that’s a Disqus
As you see the below URL image, I have already installed it.
Screenshot - acaed2a70a423eb2aab70ff3af65fc52 - Gyazo
Where I can enter my comment there.

this is not a suppirt forymum for disqus, you will have more luck there. my experience is just as a user