Thanks for the feedback. Unfortunately I could not reproduce the first problem. Try a fresh profile, maybe it is caused by a user.js or another extension? The second problem is unfortunately not possible otherwise. The HTML filter works where no external resources are called yet. I don't know why the website does not work. I'll have to take a closer look. In both cases, feel free to write an email [1] or create an issue on Codeberg [2].

[1] https://www.localcdn.org/contact
[2] https://codeberg.org/nobody/LocalCDN/issues