Your theme uses Block Areas to bring the block editor to globally editable content areas, like your Sidebar and After Post area.
In the backend of your site, go to Appearance > Block Areas to edit your current block areas.

Click on a block area to edit it. Here’s an example of editing the Sidebar block area:

Most CultivateWP themes include the following block areas:
- Before First Image
- After First Image
- Before WPRM Recipe
- After WPRM Recipe
- Table of Contents – This one should only be used with the Table of Contents block. It displays before the first heading only if the post has 3 or more headings and the post does not already contain a TOC block.
- After Post
- Sidebar