I purchased the Phoenix Drone, but I haven’t received any GEMs!

You will start receiving GEMs one day after purchasing the Phoenix Drone. After that, you will continue getting GEMs for 15 days. You can collect any accumulated GEMs via a button on the top right of the screen.

After the 15th day, the Phoenix Drone will transform into an Egg Drone and stop providing additional GEMs until it is recharged