Hi again @Laura Buonaiuto -- first of all, thank you for sharing all the details of your experience with me! We appreciate your feedback, as we are always looking to improve our sites' experience.

I checked with the team and this message ("Not seeing any classes? Check back soon as we're actively working to add more classes to the schedule.") is shown when there are no class seats available for a course. I checked internally and it seems these classes were fully booked very quickly. 

We are looking into the possibility of adding more availability in the future. Please stay tuned! Thank you again and apologies for the inconveniences.