The integration is currently inactive due to changes in the Twitter API after Elon Musk's takeover. Other apps and services built around the Twitter ecosystem have already shut down.

The API's pricing and rate limiting make it impossible for us to support the full feature. We're really sad about this—we loved how it let you build a collection of tweets and threads in Capacities by just pasting a link. 😔 You can still save tweets (or rather, their URLs), but we can only display the URL and the standard iframe embed in the page and embed views.

This feature is on hold for the foreseeable future, but we're actively looking for ways to bring it back. If we do, it will most likely be a Pro feature. We'd love to offer it to Believers too, but the new API would require rewriting the integration and a new auth system—significant engineering effort—and it would still be very expensive to run.