The “Blank Canvas” page template will only show the logo/menu, the page content and the footer area.
It is designed that way (without the header image and page title and sidebar), so is useful for when you want a blank canvas for your page content – for example with a page builder plugin.
If you want to remove the ‘Page Sidebar’ from specific pages, I recommend the Widget Options plugin.
Install that plugin and then in your ‘Page Sidebar’ widgets, control which pages it does not appear on with the extra settings that the plugin adds to the widget.
For example, make a note of the page ID of your WooCommerce account page(s) and add !is_single( '27' ) (change ’27’ for your actual page ID) in the ‘Logic’ tab of the Widget Options settings.
The conditional tag !is_single( '27' ) will filter the the widget(s) so it does not appear on the page with the ID of 27.
For more than one page, add the conditional filters each on a new line.
See the image below where I have marked the location of the ‘Logic’ tab with the green arrows.
