Missing words in epub

Hi,

Some words are missing (Boox Palma Neoreader, V2 mode, version 36862 - ea0522898e3). 

Book here: https://hpmor.ru/ (epub download link)

For some reason name of Prof. Minerva McGonagall not shown! (МакГонагалл in russian)

Other epub reader works fine (V1 mode also).