When I import my xbox games, it says 0 games imported successfully. I've been playing since the 360 came out. My PS3 games import successfully though. I've deleted the app and reinstalled it to no avail. All the sharing settings on xbox are set to "everyone".
I did consider case and tried all 3 ways. I doubt this matters but I am in the new xbox dash beta. They changed the website before I tried the app so didn't know... I also tried two other gamer tags of my friends and got the same results. Can you suggest a known working gamer tag and I'll try that. I'll also try the app on my iPad and see if the problem follows.