How to unsubscribe from Toby’s synchronous class

Toby's synchronized classroom unsubscription method:

1. You must use the mobile phone number that has opened the synchronized classroom service to send an unsubscribe text message to the designated number.

2. To unsubscribe from a single subject, send the text message qxsx" to the official number to unsubscribe from the mathematics subject.

3. Send the text message QXTBKT to the official number to unsubscribe from all subjects.< /p>