Pages “courses” or “categories” do not work

Hello! I have a problem for which I have no solution, maybe because it is very basic. I installed the plugin, created the pages automatically, and created a course, and I can access it through its link (example: https://danielestacioutrilla.com/course/sample-course/) but what I do not have Access is to the courses directory or the category directory. He tells me, either that the page does not exist (example: https://danielestacioutrilla.com/course/), or I get a page with all the text but without links (https://danielestacioutrilla.com/course-category/salud/).
I have tried to erase all the data from tools, but it does not leave me. I’m not sure what I’m doing wrong, or how I can fix it.
Thank you very much in advance,
Greetings,
Daniel

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