shouldn't 'this is not easy, this is difficult' also be acceptable. How do you know when to translate 'ini' as 'this' or 'it'?
Yes, you're right.
Please report it , so that they can fix it.
"ini" = "this"
There is no reason to reject "this" as a translation, while "it" is accepted.
It's more than that, "It is not difficult, it is hard" is ALSO rejected. The problem is... it's been over 2 weeks you guys commented and reported this... and.. meh... I've been downvoted a few times because I mentioned the fact that this course although GREAT, could REALLY use a help of some NATIVE speakers. Not to mention that someone even commented on one of the sentences basically saying that "non native speakers speak English more correctly"..... I love the course but the arrogant way things are handled are seriously ticking me off... (I'm sure the downvotes are coming, although I'm just stating FACTS)