With the address verification you upload a photo of an official (government) document on which your address is stated. This document must not be older than 3 months.
What is allowed?
A document from the bank, government or a utility company (gas/water/light) not older than 3 months.
Digital documents are also allowed.
What is not allowed?
Anything not covered by the above will be disapproved. A pay slip, telephone bill or an invoice for a package is therefore not sufficiënt.