Ever since I opened the zoo I cannot get the materials I need to build the township buildings… I get plenty of concrete slabs and bricks but I cannot get windows… I’ve gotten two full train orders of three trains each and the first one did not have any windows and the second one had 1 when I need 10 to finish the one building. I read the helpful hint of not building too many buildings at once so I was only building one at a time then I started a second building hoping I would get more windows but that also did not work. All I want to do is delete the zoo so that I can go back to getting windows and being able to build the township.