According to THIS KOREAN ARTICLE, the Korean documentary "I'm Sorry Dokdo" is flopping at Korean theaters. Besides showing on only about sixty screens around the country, some of the theaters are just squeezing it in between other movies or showing it at only midnight showings.
Instead of reinvigorating interest in the Dokdo dispute, which was the intent of the documentary, the film seems to be confirming a lack of interest in the dispute among Koreans, at least to the extent that they are unwilling to spend money to watch a documentary about it.
Actually, the documentary does not sound very interesting since it does not really deal with the historical facts of the dispute, but, instead, focuses on people who are involved in drawing attention to the fact that Korea currently occupies the islets, such as the old Korean man and his wife who live on one of the islets.
Though I am interested in the Dokdo-Takeshima dispute, I would not waste my time and money watching the above documentary, which seems to ignore the historical facts of the dispute.