As soon as you know that you’ll have to miss a class, email or Whatsapp your teacher, before 17:00. If you are on time, the teacher will record the class. You’ll receive the link to the recording at the end of the evening. The recording will be available for 24 hours.
When you don’t ask to record, you cannot catch up.
However, as long as time differences permit, you can join your online classes anywhere. That’s why many students, when on a business trip, or staying with their relatives for a holiday, participate in the lesson as usual.