Automatic Sharing

Hello, I’m hoping someone can help me figure this out.

I have my blog setup to several social media site (Facebook, Twitter, Email, etc.)

When I publish a post, it automatically shares a link to the above sites, which is great and exactly what I want. However, when I schedule the post, it sends out Email notifications but does not automatically share to Facebook or Twitter.

How do I fix this? I would like my scheduled post to be published to these sites as well.

Thank you!!!