I am also having this problem under my account. Under a free account you should be able to retweet 200 times over 30 days from what I read, and that does not seem to be the case here as approx. 20 retweets have been made. Please help!
No retweets at all today. No indication that I have gone over my limit.
My account is not retweeting either. In fact, it hasn't retweeted since July 15.