Sorry I am not fluent in German (even if the plugin is translated 🥳) and don't forget that I provide this peace of software for free, developed on my free time 😎 (3 stars is harsh 😕)
If you encounter download problems, feel free to send me an email in English with the HTML code (+ screenshots) of the page that has failing downloads so I can fix that bug 🐛.
Without the HTML code I cannot fix bugs...
Also be sure to use last versions of Firefox and this plugin 👍
