Just to thank you for the exchanges so far and the clarifications provided by @Karellen. I was out for a while but it looks that the add-on is still working!
Light IMDb Ratings Update - Keep updated the IMDb ratings for your movies and TV shows.
In case you found useful my work, feel free to offer me a cappuccino!
The description says "to update the ratings". What does it mean "the ratings"? Are there already (old) ratings in kodi which have to be updated? Does kodi already contain a system to display ratings?