The client isn’t back online because of anything that Twitter did, though. Tweetbot co-creator Paul Haddad tells The Verge that they still haven’t heard anything from Twitter, so they’ve “decided to start using new API keys and see if it fixes the problem.” This could allow Tweetbot to temporarily avoid any disruptions to the service, even if it puts it in a semi-working state.
As pointed out by iOS developers Mysk, Tweetbot is likely having issues because it’s using different API…