We know that this feature was being tested and it was not out for all players so if you no longer have this feature, this means the game studio has decided to remove it. We're not able to add it back to your game so hopefully the studio will decide to make it a permanent feature but can't guarantee you that.
Now as for the boosters that got lost, this happens when you delete the game app as only game progress and Gold bars gets synced and backed up.