got the same as well
Also received the same
Almost certainly a marketing ploy to draw inactive players back in.
Also received the email but not the rewards when logging into the game. Also not an inactive player as log in daily. Bugs and general incompetence are comical at this point.
It's just a reminder that there may be compensation waiting for anyone who hasn't claimed it.
I’d bet good money that it’s related to the Unix epoch bug that’s affecting certain dates in-game.