Struggling with connecting Jetpack to Social media

I been struggling with connecting Jetpack to facebook and twitter for a couple of weeks.These are the steps we have followed…

1. login to the admin

2. go into Jetpack -> My Jetpack

3. click Social -> Manage

4. Click “Connect your social media accounts”

5. Click “Connect” button on either facebook or twitter and then login to your social account and grant access

6. You then get the error message – 500 status code for “POST /sites/*********/publicize-connections/new”

Any help would be greatly appreciated.

The page I need help with: [log in to see the link]