Hi Lindsay,
The template that is being used is a custom template for Timeline Express. Are you certain that the template is being used on other pages?
You should be able to hide the sidebar on the single timeline express announcement templates only by using the following bit of CSS:
.single-te_announcements .sidebar-container {
display: none;
}
If you are familiar with customizing the WordPress templates, you can follow along with our tutorial we have setup in the documentation. This would allow you to duplicate your existing page templates, so the sidebar sits in the correct location – or you can remove the call to the sidebar altogether.
That article can be found here:
https://www.wp-timelineexpress.com/documentation/customize-single-announcement-template/
Let me know if that helps out!
Thanks,
Evan