Blog articles not working

Hello again!
My website is https://www.yogaecannella.it, however there is a landing page now, so you’d better head off at https://yogaecannella.it/blog. Try twice if you still see the landing page.

My problem is that I see the posts feed on the blog page, but if I click on the single post I see an error, “Ooops, that page doesn’t exist”.

It happened also with the default post.

I tried deleting all the articlesand starting again, but I keep seeing the same error.

Thank you
Francesca

[ No bumping please. ]