Hi,
Thank you for contacting Edwiser.
I suppose that the courses are properly synchronized,
Once the Moodle courses are brought to WordPress.
The courses are generally published with this permalink structure https:yourURL.com/courses/democourse/
If the courses are not visible in the front-end then the reason could be conflict with some other plugin which uses the same URL as one mentioned above.
Or this could be a theme related issue.
Please do check if the above mentioned are the reasons for courses not been visible and if you continue to face the issue then send us a mail at [email protected].
Regards,
WisdmLabs.