We need to make sure that the person claiming is an actual passenger on the booking in order to let you claiming on the customers' claim form.
If you are a passenger on the booking, you will need to confirm it by verifying your travel document so we will make sure that your actually a named passenger on the booking and the owner of the myRyanair account.
If you are claiming on behalf of a family member or friend, you would need to do it though their own myRyanair account for security reasons.