I'm sorry that I have not been very clear. The connection of my Samsung Flow issue was from my phone (Samsung Note 9) to a computer (Dell Latitude 3300). There is a black screen that appears whenever I open a Webtoon episode. Personally I don't think it's a solvable issue since that issue is mainly because the app is preventing anyone outside from seeing the page when task manager is opened on my phone. The same thing happens with the incognito tab in Google Chrome.