So finally the developers helped me and fixed the bug according to add-on installation.
Now I saw a little bug, which can be a problem in the Trakt addon?
When I start Kodi, I can see lots of movies marked as “in progress movies”, however I saw it later. This happened after I synced my watch from Trakt. When I click on one of the movies sorted here, I can only mark as unwatched…
And also not all my previously seen movies listed there…