I am publishing my first Xamarin.Android app for the first time, and am therefore creating my Google Developer Account for the first time. It's very hard to be sure whether I did everything necessary or what I missed, it sometimes feels like the account creation & publishing process is as much work as the app itself. But I think I have done everything needed, except for the signing. When I attempt to upload the Android App Bundle, it tells me it is not signed. This makes sense, but when I try to sign it in Visual Studio 2019, the Register Google API Access asks for a Client Secret, which I cannot find in the same place I found the Client Id (and I assumed I could make Account Description whatever I wanted). However, if I leave Client Secret blank, I receive the following Authorization Error:
Error 403: access_denied
Is this because I forgot something at Google? Do I need to get the Client Secret somewhere else? Any help would be appreciated. Thanks.