Thanks, I’ll try it that way

Reviews should generally be covered by fair use. There could be differences between legislations, but I doubt there is in the Netherlands…

I suspect the makers don’t check what’s going on here much. You’ll probably have more luck contacting people directly via their website https://librewolf.net/

There is a subreddit for artwork, which is also linked on the website. If you can’t get ahold of anyone, that could be your next step. You could try to get permission from the community creators directly.

I don’t know what the tenor of your review will be. I suspect if you didn’t shittalk them like you were the president of the USA you’d probably be alright to use their logo with proper attribution underneath it. But that’s just my opinion and I don’t work there.