I use the beta version 7.8.40 for EPUB or PDF. I've clean the configuration like indicated here :
https://www.mobileread.com/forums/sh...&postcount=402
For each book (EPUB or PDF) the configuration is forgotten. At each time, when I open the book that I am reading, I must configure 'Book mode' and '2 pages'.
For EPUB files, the links are not usable. With Neoread2 (from Onyx), some text are well placed, like some stars '*' between the paragraphs, the pagination is goof but not with the Beta 7.8.40. For the EPUB format, I found the same issues than with my M92 and FBReader.
This situation could be normal, I don't know if Librera is mainly done for PDF or is previous to support PDF and EPUB at same level.