The Jobs you see in the V4S Kiosk app is from VfS (Volunteer for Salesforce) page.

And the Shifts showup on the V4S Kiosk app if you have marked the Job as inactive but the Volunteer recurrence or the Job recurrence is still active for the job which is marked as Inactive. To know more about the Recurrence Schedule, please refer to the Volunteer for Salesforce documentation and check the "schedule Recurring shift using Job Recurrence schedule" article.