This depends on your order. The mystery box is shipped every Wednesday. Deliveries can be done weekly or monthly. If you have selected box of the month, your subscription will be shipped roughly every 4 weeks
Yes, you can update your subscription at any time up to 24 hours before your subscription is fulfilled. You should have received an email with a link to access and manage your subscription. Simply login and you'll be able to cancel and adjust your details!
There are no additional fees!