Prospector add working certificate

Hello steemit friends so i have been playing prospector since day 1 , the earning is good, the play time is minimal and it is a really good game that can easily bring in new comer because how easy the game is to make money and people like to play it

So i have been making more than usd400 from this game and now they start to add in certificate where you need to pay around 60,000 gold or 60pgl or 1.7 eos to buy cert so that your worker can work for 5 hour continuously otherwise they can only work 1 hour and you have to come back and click every hour

I bought the cert immediately because i dont want to come clicking every hour because i have too many games i need to play

Anyway they also add in the coffee bean into the game , i am wondering what is the use of coffee bean

Anyway thanks for reading