Hi, in the last version of the plugin (1.2.1) there's a bug with Greek (and maybe other non English languages).
Assume the focus keyword is written in lowercase, but written with the first letter in capital in the title or in the body of the post.
Then, in this case it's been detected in the "general" tab, but not detected in the "page analysis" tab.
Check the linked image. the example is with page title.