If you have a black screen try reload the page, i dont understand why that happen im using latest version of construct 3, Yes because of the layout scale little low Full Screen is better, right now the limit bees is 300, so you cant get more than that, but if your cpu is little strugling from a threat on the web browser you can get lag or even freeze while is calculating, there is only one event that can make new bees appear and is if you have 1 seed, and 1 fruit, then you go to the Hive and toutch it on the bottom, it should appear new small bees. What PC build specs you have???