Emails for post go out now and at scheduled time

Hi

I am using Publish to Schedule with “NextScripts: Social Networks Auto-Poster” and “Subscribe2”.

At the moment when I click publish to schedule:
the emails go out
the tweets go out
facebook post goes out
and then the emails, but nothing social, all go out again, when they were scheduled for.
If anyone does click the link in the email, the page isn’t there, so they get a 404 error.

Thanks

Michael

https://www.ads-software.com/extend/plugins/publish-to-schedule/