This theme, just like many others, is not 100% ready for translation. Why? Just because developers don't have time to choose universal fonts to show all letters specific for different languages. Of course anyone can change font for whatever they need to, but in many cases it's hard to do - font is very important thing, sometimes it decides wheter any theme is OK for us or not.
I understand that this is free theme so I shouldn't comply. I just want you to think about it - how many peoples are upset when they choose your theme, they like how it looks but they have to change it to sth different just because their text looks awkward.