Free courses not working

Hello, Since the last theme and plugins update I have a huge issue on the website: the free courses are being showed as Private Courses to students and can't be accessed. I updated now the Vibe Course Module to version 1.9.9 but the problem is still there. I deactivated ALL plugins and activated ALL the theme's plugins and the problem is still the same. Can you please tell me how to fix this? If I use an admin account I can see that the course is free and I can access it. But if I login using a student account, the course is marked as private and can't be accessed. I saw that other users have reported this problem and I am surprised to see it is still not fixed. I managed to do a quick fix by setting 9998 to Maximum number of students allowed to take the class, but this is a premium theme and this kind of important bugs should be fixed faster. Any update on when it will be fixed for good? Thank you!