I know lots of people with WiiUs. I don't know anyone who has used theirs, other than the first 3 days after they got it. My family got one for Christmas and set it up Christmas morning, but due to updates it wasn't useable until the next day. Not that any of the kids wouldn't rather play with iPads than its clunky plasticky tablet.
An update is released or soon to be released within a short time that's a major update to the system. Tell your family member to apply it