Hello Kitesz thanks for the review,

regarding not persisting, the blur might not persiste for web apps. Websites which loads after loading for them the click to blur will not persist but if you use blurarea it will work with keep blur

secondly website not loading we have a 5 clicks solution for that check https://www.blurweb.app/help/few-website-do-not-load-when-blurweb-app-installed (So all you need to do is right click and choose "This can read..." and then select "When you click the extension)