Hi Kevin,
Thank you for reaching out to us.
Please be aware that our demo have been build with Gutenberg editor. It is the default editor for WordPress and is recommended for many reasons, including its ease of use, speed and lightness. To know more about how to use Gutenberg, I think this article from WP Beginner might help you: How to Use the WordPress Block Editor.
So, to edit the content, you gave to click on “edit page” and click on the section you want to edit. Then, on the right sidebar, you’ll be able to change the text in the section’s options.
Note that we use widgets in our theme, more precisely in the footer. You will be able to use the customizer to change the look and add widgets in the widget areas defined by our theme. Both Grimlock widgets and Grimlock blocks have the same characteristics.
I hope this will help you. Don’t hesitate to come back to us if you have other questions.
Best,