Let me back up and say that I only want to share a few services from ArcGIS Server to our ArcGIS Online account. So I am not sure if the webadaptor needs to be configured or not. So that could be part of the problem. Still, I click the save button, and nothing happens at all. The screenshot doesn't really help because there is no error message or anything. The save button is enabled and I can click it, but nothing happens afterward.