Why Glu stop upgrading the Deer Hunter Classic on Amazon App Platform?

master_hunter2015

I have not played the game much this year but sometimes log in to check updates, but I found the game has not been updated since June 2017 on Amazon app platform. This is a whole rip off to Amazon paid players. Other platforms in Apple and Google already reach to region 60 but Amazon is stuck at region 45.

Glu, please update the game soon.