already enrolled course why again buy

Hello @bhumi912,

Thank you for reaching out!

Make sure that the course is not expired for this user if the Expiration option is enabled:

https://docs.stylemixthemes.com/masterstudy-theme-documentation/lms-courses-features/masterstudy-theme-manual-course-builder#expiration

If the course is expired, you need to remove the user from the course through MS LMS > Courses > Course Name > Manage students. Then you can reenroll the student in the course manually using an email address.

Let me know if it helps.

Kind regards