what did I miss? (haven't played since 2022)

as the caption says, I haven't played this game since 2022 (specifically during version 2.6/war under shattered skies) I oddly remember being forced to uninstall the app because it was cringe or something but anyway

what have I missed over the 3 or so years I havent played this game? I've just recently got back into the game because my friends were playing it-