Thank you so much for playing the game! I greatly appreciate tour time spent on it and your feedback. Game balance is not yet on the table, as I am still focusing on implementing first the base mechanics. Then I will work on some better demands and resource availability.
They are not refueling probably because the fuel station doesn’t have a fuel. You need to have a refueler drone to refill the fuel stations. Also, you need the fuel to be at the starbase available. So need to produce it from Uranium Ore -> Pure uranium -> Fuel.