Chances are, that this error is caused by exhausting your hourly API request limit. E.g. if you use a Twitter client on a smartphone, tablet and a computer, this scenario is very probable. Unfortunately, there is no way for us to download your tweets, if other applications deplete the rate limit for your Twitter account. However you can:
- increase the auto-reload intervals on other clients, e.g. 15 minutes.
- unregister all unused applications and services connected to your Twitter account
- wait and hope that some of our requests do eventually get through :)
For further information, please refer to the official Twitter documentation about the limits imposed on your Twitter account: https://dev.twitter.com/docs/rate-limiting/1.1