Can’t use specific slug | WordPress.org

[ad_1]

Hi everybody.
I need help with the blog page of my website (studiopanda.ch)
I want the slug of the page to be “blog” and therefore the url to be “studiopanda.ch/blog”.
When I created the page and published it, wordpress chose “blog-2” as slug. If I try to change it to “blog” I end up with a completely different page, which looks like this:

It seems to me that it looks like a post archive page, which I never created and don’t find anywhere.

The slug “blog” was used in previous test pages I created. Those pages were deleted and the recycle bin was empted.
Any suggestion?

Thank you!

The page I need help with: [log in to see the link]

 

This site will teach you how to build a WordPress website for beginners. We will cover everything from installing WordPress to adding pages, posts, and images to your site. You will learn how to customize your site with themes and plugins, as well as how to market your site online.

Buy WordPress Transfer