How did Uranium come back?

[Arieth]

Since it was took down by Nintendo not so long ago, I slowly forgot about this game. Recently, after playing Pokémon Sun and Pokémon Moon on my 3DS, I got back to Uranium with the objective of sweeping the entire game with a Nucleon. When I got my Pokédex, I checked the Mystery Gifts just in case there was something left, and, to my surprise, there was- no less than 4 gifts. Then I got a forum account to ask about it and discovered the game was being updated again and they told me there will be more events. What did I miss?