In some cases, our staff may require you to provide a so-called Proof of Address. This means that we require a document that proves that you live at the address you provided during registration.
The reason for this request is that we routinely check if the information players enter is accurate. If we have reason to believe this information may be outdated, or if we perform a random check, we will ask you to provide a document that shows you live at the address registered to your account.
Please read this article for an overview of the requirements for a Proof of Address document.