I guess there is no other way, you should RMA it. I do feel for your case, it is really sad build something which has a high cost like this nowadays to get to the point it just not do what was intended to do. If I was not living in another country (Brazil here) I would get out my house with a card on hands and check this personally for you.
I do hope you have this working in no time and please let us know how this ended later. All the best!