Wix Bookings: classes that are scheduled far ahead display as "happening this week" - how to change that?

My customer is having trouble with the class service view. I can only solve that by clicking away the schedule display function. Otherwise it shows (below schedule) the sentence “happening this week” even though the class is scheduled weeks ahead and all the data set is correct. I tried all possible codes, nothing is working - is there an easy solution maybe? Than you!!