Jetpack publicize not working

Could you try to reset your Publicize connections, as explained here:
http://jetpack.me/support/publicize/#reconnecting-facebook
http://jetpack.me/support/publicize/#reconnecting-twitter

If that doesn’t help, could you walk me through the steps you followed to publish your last few posts? Did you use a specific plugin to clone or duplicate existing posts? Did you use a third-party application?

Thanks!