I tried to first add then check the movie “Die Drei !!!”, (https://www.icheckmovies.com/movies/die+drei+exclamationexclamationexclamation/, tt8851630). Probably due to the “!!!” in the title, there are problems with it.
Adding it worked, but I never got the notification message. Now that it’s added, I checked it, but the check isn’t counted. Furthermore, the movie is almost unfindable if you look for the German title.
One could use the alternative title “Die drei Ausrufezeichen” as the main title, I guess.