Microsoft has acknowledged the problems of the WWE Network app on their Xbox 360 and provided a short notice on their website.
Posted yesterday afternoon, the statement reads, “Are you having trouble using your WWE app on your Xbox 360 console? We’ve got you covered, Xbox members! Thanks for being patient while we work toward a fix. We’ll provide an update for you as soon as possible.” The status of the WWE app is listed as “limited” and says that users may experience difficulties with the app.
The service page suggests to try and delete and reinstall the WWE app if you get any errors, a fix which apparently doesn’t really work. You can follow the status of the WWE app on Xbox here.