Problem with WP Fastest Cache & Learndash

Hello! I am facing the following problem in my Learndash courses. When the enrolled users visit the course they see the page as they were not enrolled to the course they have paid and don’t have access to it. I delete the cache via WP Fastest Cache and the problem is been solved but only temporarily. After 1-4 hours the problem appears again. I have all the plugins up to date.

Is there anyone facing the same problem with Learndash & WP Fastest Cache?