Changed my availability but my student slot is still there every week
I currently have 20 students, the other day I realised I cannot do more than 5 classes a day so I went and changed my calendar availability. I reduced my hours for thursday and friday, but when I go on my calendar I still see that my student has his usual slot on thursday that is now outside of my available hours. It's like this for every week, he has paid the reoccurring class.
So does that mean that preply did not warn him I changed my availability? What do you do in this situation?