Very probably I have the same problem, but just with polish language.
Some parts of the theme are not displayed in the default language:

1. The default language is setup to polish: http://prntscr.com/9axejt
2. In loco-translate I can see that the “read more” & co. are correctly translated, but still the button is in english: http://prntscr.com/9axd9w
3. The contact page buttons and the infield descriptions are also in english: http://prntscr.com/9axg19