Had subscribed for a month and then paused subscription with Google Play. Couple months later ALL my diamonds are gone (including ones earned from playing) and when I emailed (because I wasn't notified) I was told they were removed because I had received monthly diamonds for subscribers while not having an active subscription. So I get punished for THEIR system error that didn't account for paused subscriptions. Not a good way to keep players and make people want to spend money on your game.