Starting April 30th you will no longer be able to share your WordPress posts automatically to Twitter using Jetpack Social.
Twitter decided, on short notice, to dramatically change the terms and pricing of the Twitter API. We have attempted to work with Twitter in good faith to negotiate new terms, but we have not been able to reach an agreement. As a result, we will need to remove the functionality.
You can still auto-share your posts to Tumblr, Facebook, and LinkedIn using Jetpack Social. And you are able to share your posts to Twitter manually by pasting the post link into the body of your tweet. In the near future, we are adding the ability to auto-share to Instagram and Mastodon and we are continuing to release new features in Jetpack Social.
If auto-tweeting is mission critical to your workflow, we would recommend you explore third party plugins that allow you to bring your own Twitter API Key, such as WP to Twitter plugin by Joseph C Dolson, or Autoshare to Twitter plugin by 10up.
Thank you for your understanding with this situation. If you have any questions or require further assistance, please open a support ticket with our team.