Change it in your account. The Wacky Robots subscription is discontinued and new sign-ups are closed, and existing subscriptions have since been wound down: rather than continuing month by month, the boxes still owed were consolidated and sent as one final delivery.
If that final delivery has already gone out, its address can no longer be changed. If it has not been sent yet and the address is wrong, message us here, or email [email protected], with your order number and the new address as soon as you can. If it has not been packed yet, we can still update it.