There is a bug in the medal for investing in industries. When I invested in 10 industries, the game awarded that medal to me - but then a few days later it was back up as "open" and showing that I had only invested in two industries. I sent in a support ticket but support has done nothing about it and doesn't respond. I invested again until it went back up to 9, but I held off investing to 10 on purpose so as not to trigger the medal, so support could see that the bug starts taking away investments. In the past few days the number of investments shown has decreased from 9 to 6.
Has anyone else experienced this?