I would like to know how to display the stars?
I activated the option but nothing appears…
Also I would like to know if it would be possible to put for the I like just a thumb to click and not have to go through them…
It is not intuitive at all.
And if possible include the option I don’t like :)
No problem. But please be aware that if you are looking into a very specific thing, but are choosing premade plugins, you might not get what you want. You could choose something that is still good enough for you, or (let) create something custom.
If you create something custom, you could look into extending standard comments, that might be the cheapest.
You can also take a look at testimonial and review plugins. It is all the same, there is a form, people can leave a message, it gets published on the website. Just a different name.