I have competed twice - won both times. However, in one case it was very competitive and I believed that Duo Lingo would keep the correct time. Instead, they increased the time by at least 48 hrs. This is not right. another time they also increased the time allowed.Nt place person "silvio" had User's recommendation: I would not recommend competing if rules change once the competition has started. for those of us who appreciate competition this is not a correct thing to do. time should be as advertised.