There was suddenly an issue with the booking function for one of my teachers. When I clicked "Programa una clase" for "Teacher 1" the calendar popup did NOT show, but the page just reloaded. Looked like a bug to me. Most of the others teachers seemed to work. However, "Teacher 2" seemed to have the same issue, loading, but no calendar popup. This meant no classes could be booked. I have tried again several times with no success. In the next class I have explained the issue to "Teacher 1" and she scheduled more classes for herself with the system. That fixed the issue. However, it would be extremely helpful to see a clear informativ message as the booking person in that case. Either the calendar popup could be displayed, so it becomes obvious no more classes are available. Or a info message should be displayed, that the teacher needs to be contacted for scheduling new classes. In other cases, like the teacher ends his job or is temporarily unavailable the message could reflect that.  No info, just reloading ...

Thank you very much for letting us know.