Not random

Hi,

Unless I’m missing something, the posts don’t show up randomly. All I get are all the latest posts from each category, in a from oldest to most recent order. It doesn’t browse through all the posts at all, can you help?
Many thanks!

https://wordpress.org/plugins/advanced-random-posts-widget/