Hi. I have a problem and would like to know if anyone else has this problem. My dwellers have died because of invisible radroaches. There is nothing there , but the dwellers die and you can hear the sound of the radroaches. Then the dwellers had their guns drawn and running around the room for no reason because nothing is there. I also cannot build anything nor can I rush rooms because the game is in attack mode and nothing is there. The game is not producing resources or anything. I have spent money on this vault and don't want it to go to waste so I NEED HELP!! Thanks.