Theme works a bit differently when it comes to setting up Templates for Pages. Since it uses a Page Builder with which you first build the Templates (Pages) there is less options for Page Templates under Page Attributes.
This is the default template and it outputs exactly the content of the page, without any modifications. This is a full width Template.
Default Template with Sidebar
This is the default template and it outputs exactly the content of the page, without any modifications. This is Template with Sidebar on the right.
Template for Page Builder
This is the Template used for pages built with Page Builder. Under the page content you will notice a part titled PMC page builder options for this page. Set Template for Body, Header and Footer. You can leave the Footer and Header Values to Default to use the default header and footer of the Theme. Under Page Attributres be sure to set the Template to Template for Page Builder.
Screenshot below is showing where these crucial parts are: