Login problems?

A couple of days ago, the DnD 4e Compendium got a review in the App Catalog from Shawn M, who marked it zero because he was unable to log in - and I'd like to address his complaint here, since the App Catalog doesn't provide me with any way to respond to comments internally.

Very DISAPPOINTED!!! I have an account but it still won't let me login nor see any information. POOR APP!!!
By Shawn M

The Compendium app itself doesn't actually handle any login information at all. Once you've chosen to view an item, the app launches the phone's browser, and user authentication is handled by the Wizards.com website, over which I have no control.

If you have any trouble logging into the Wizards of the Coast website, you should contact their technical support, because unfortunately I'm not able to do anything about it.