Just to make sure guys. There is a small bug in the game you should be aware of.
When you are asked to keep the Eeveelution upon completing the 4 levels, you have to click yes, and yes again to confirm. Although it says you picked the Pokemon and saved it to the account, if you clicked "Play Again" cause you are clicking through (or like me, thought that button is "OK"). YOUR EEVEELUTION IS NOT KEPT. You have to exit the browser (closing internet browser/tabs), in order to keep it.
To confirm if you have kept it, log on to your My Pokemon account and try to load the game up. This text box should come up like this "You have already earned (Eeveelution) from playing this game, this cannot be changed." before closing and letting play the game. If this box does not show up, you have not saved your choice and have to play again.
I made 5 My Pokemon accounts plus my main one and see if you can sync them to different games, with 6 different Eevees each. I played through all of it already, so tedious...