Summary AND full post is showing on my blog page

My blog page: https://www.stefandue.com/blog/

Is showing both summary (excerpt) AND full post at the same time!… At the Setings>Reading I have set it for “summary”.
I am using the plugin “Advanced Excerpt” to enhance my blog page, but also when this plugin is deactivated it’s the same problem…

… Anyone tryed this before or know how I can fix it?

Thank you in advance!
-Stefan Due