A protected order shows a note on the order received page, in My Account and in order emails. Customers report a problem from My Account, or through the signed link in their email, which needs no login and is how guests make a claim. Links expire after a year and can not be changed to reach another order.
The customer gets a copy by email. Only one claim can be opened per order, and developers can change that with a filter. Without a delivery date of its own, WooCommerce can only count the claim window from when the order is marked Completed, or when it is placed. You choose which.
