WoT European Championship - Question & Answers

ZShalafi, on 11 July 2016 - 11:33 AM, said: Snipped from the rules: "The players in a team must be citizens of the country they represent. By entering the competition, the players consent to collection and further processing of their name, surname and their country of nationality by Wargaming, as may be needed for the purpose of verifying the qualifiers in which they are supposed to play. At the end of the National Qualifiers, IP checks will be conducted to ensure that this rule is respected. In case the IP don’t match the selected qualifier, the players will be asked (via forum, in-game messaging or via their registered email) to provide a proof of citizenship, and will have 24 hours to provide it. "   My account details and IP checks out, still I'm asked to provide proof. What then is sufficient proof?