Ignore this. Inserted the widget again and it’s working now.
Apologies
Sorry – still not working quite rigt.
It is using the right category for the title, but the posts are from all categories.
I found an issue.
The issue is about excluding categories?
Would you test the patch before we will release the version: https://www.dropbox.com/s/jjlrkcaczw8692x/same-category-posts.zip?dl=0
Similar problem: this plugin was working perfectly on a site that I don’t visit often. But I discovered 2 days ago that every page (including the home page) was non-stop repeated! This stopped immediately after deactivating the plugin.
Then I tried to delete it completely and reinstall the version available today, but this produced exactly the same problem.
Do you have tried that option in the Filter panel: seperate terms. It seperate all assigned categories and you can set a max. number of shown post out of each single category.
More explanation here at one of our blog posts: Separate categories.