Beneath each island you will see an amount of cash generated per hour by the crew. Depending on how many crewmembers you have, the island will generate different amounts of cash. So, the more crewmembers you have, the faster you’ll generate cash.
If you have more questions, please contact us through the game by going to our Menu > Settings > Support. We can help you quicker this way, because the game will allow us to view your account and better help you.