Hi there,
Twitter recently announced they would end free access to the Twitter API on February 9th. A recent update extended that date to February 13th.
As a result of these unexpected changes, it is possible that Jetpack Social may experience some temporary outages when automatically sharing your posts directly from WordPress to Twitter.
We’re working with Twitter to find the best solution for our mutual users, so your workflows are not disrupted. We will reach out again when we have more information on the path forward.
Please feel free to connect with support if you need any help.
The Jetpack team