They say Canadians are polite, but we have nothing on Kansas City people.  See, where I would say "the wifi extender just doesn't work at all," they managed to say something like:

"We need to experiment with the wifi settings in each home.  We try to turn off the wifi extender when we can, and in cases where that means the network coverage isn't enough for the whole house, sometimes we turn off the extender and install a new router."

So, in short, the extender has two useful settings: off, or off and buy a linksys router.