* Does the website use a strict SOP? Wiki article: [Broken JavaScript or CSS on some websites](https://codeberg.org/nobody/LocalCDN/wiki/Home#user-content-7-a-website-looks-weird-or-cannot-be-used-if-i-deactivate-localcdn-everything-works-what-is-the-problem)
* Which browser do you use? Chromium-based browsers do not support all features of LocalCDN. Wiki article: [Chromium incompatibilities](https://codeberg.org/nobody/LocalCDN/wiki/Home#user-content-2-can-i-use-this-extension-in-my-chrome-browser)