You'll first need to log in to change the address associated with your Stretch account.

Once logged in, tap the menu bar in the upper left corner.

Next, tap "Profile."

Next, tap "Address."

Next, search for your current address and press "Update."

You will receive a confirmation email confirming the address change.

Note: You can update your address only after you have received your physical debit card and activated it. You cannot update your address at any other point prior to this.