Re: cover image--the plugin gives fimfiction stories a cover whenever story has a cover image on the site and include_images is true. I'll add an option to suppress cover generation in general for such cases.
Re: Accept-Encoding--there's no such option in personal.ini, you can delete it.
--downloaded fine for me with v.1.5.2.
--Failed for me, too. I'll work on it.
Re: disappeared from the site or have password locks --can you give me an example URL for each?
Thanks for your feedback, it's very helpful.