Please visit this page to login into your customer account: https://www.stickerkid.de/ch_en/customer/account/login/
Under “My Address book” you can change or amend your billing and shipping address.
Important: If you want to modify your delivery address for an order that has already been placed, you can update your details until the shipping status changes into “in delivery” in your UPS customer portal, using this link: UPS
In case you need help, please submit a request here.