The Deliver Baby at Hospital never worked for me when i clicked Join. After checking in nothing happened. Today i tried again and i investigated some more on why it does not work. I found out that after arriving at the Hospital my Sim does not get into the Situation needed. The reason is, that in the filter "is pregnant in labor" it tests if the pregnancy progress is at least 99. But the Labor starts at 97. So if your Sim is in Labor but the pregancy progress is 97-98, it will fail. Fixed that and now it works for me. I also changed the Doc in a way that they are near the front desk instead of outside. This way they will take care of you when you enter the Hospital without the need to check in