Pour utiliser les extensions Android, vous aurez besoin de Firefox pour Android. Pour découvrir les modules complémentaires pour Firefox, veuillez visiter cette page.
Try reporting czc.cz using the "report" link in extension's menu: you'll see I'm aware of the problem and it will be fixed soon. Btw, you don't have to uninstall the extension just because of that: you can whitelist that website until it has been fixed.
