I set up a Roundteam account, and set my account to auto-retweet a hashtag.
It missed a retweet. So far, it has been auto-retweeting the hashtag, but missed one.
What would be the reason for that other than Twitter is down or RoundTeam is down?
The mentioned Tweet could have been rejected by one of the Filters applied to your retweet setting. For example, the mentioned Tweet could have had more hashtags or mentions than allowed by your filters.
Please, let us know if you have more questions.