I am glad it's working for you. And yes, I love the KOReader app (for Kobo) as well, and thanks to the devs for all their work on it.

That said...just an observation, but speed has NOT been one of the strengths of KOReader since I've been using it. Quite the contrary really; I've found it to be frustratingly slow when opening larger books (but it does ok on books of more common sizes, so this is not an issue with most books). I'm referring to how quickly it can load a book, or process a book-wide change (like a font change). These tasks, along with searching a book's contents, are the most common things I do that test an app's speed.

Here's a case in point: I have some books in my collection that are quite large, and quite complex in that they contain a lot of internal links. For example, one of these is the complete works of Shakespeare, an annotated edition that has many thousands of internal links (for all the footnotes). For a first-time (uncached) load of this book, KOReader took over 12 minutes. Even after it was cached, it would still take over 2 minutes just to open the book. Any any time you made a change to the reading settings like font, etc., it also takes several minutes to update the book. In contrast, the Kobo shipped software could do a first time load in under 20 seconds, and subsequent/cached loads only take 2-3 seconds. Similar with font/style changes.

I don't see this as a Pri 1 urgent issue (because it's a non-issue with most books). But hopefully KOReader can eventually improve its performance at processing large, complex texts. It's a use case that will matter to some readers, and some types of content.