I am an undergraduate college student and in order to graduate, we need to build an app for senior class. We picked to build cross platform app by using Xamarin and coming from heavily Java, we do not have any experience with Xamarin using C#. However, we got stuck on OAuth -user authorization. I have done a lot of research and cannot figure it out. Is there anybody who can help us on this issue? None of my professors are aware on the subject so I cannot get any help. I am ready to pay if it is necessary. Live help (TeamViewer) would be best for us. Sorry posting this kind of question but we are desperate. Thank you.