Challenges with publicize

Hi Community,

I wondered if anyone has any experience troubleshooting with the publicize tool.  I linked up to my twitter account but it has only automatically tweeted out once.  I have tried disconnecting and reinstalling the app but with no luck.  This morning I had hoped my tweet would go out at 7am BST but it did not.

I have read that a scheduled post only publishes when someone looks at the site but the link to twitter should still go out regardless. Has anyone else had this challenge?  It is a great tool so you can schedule posts to publish when you are not around but I only managed to get it to send the tweet once.  Any thoughts.

Thanks in advance.