If I buy a StarCraft 2: Legacy of the Void Battle.net key from a Russian shop, which says it's for "a Russian-language version, intended for activation in Russia", what are the restrictions exactly?

1. Does this mean that if I install an English-language version and log in with a battle.net account that has the Russian key it will not play?
2. Does it mean I need to have a Russian IP address when adding the key to my battle.net account?
3. Does it mean I need to have a Russian IP address whenever I'm playing the game?

I found [this relevant question](https://gaming.stackexchange.com/questions/68384/diablo-3-english-install-with-french-key) about Diablo 3, but the answers are conflicting and anyway things may be different for Legacy of the Void.