I can't choose a date to book a session

Started on Wed, 13.04.2022 - 5:50am America/New_York
Abdullah Awad
Level 1
Hi, I am tring to book a session, but once the website show the calender to choose the date I simply can't choose a date. Looks like somthing is wrong in the website. Can you please check?   Many thanks, Best regards,