I posted a tweet about this a couple of days ago, too. Spammers are getting more creative and annoying. Anyone who purchases something from these companies should have all of their money taken away from them.
I have an older 802.11n airport. It will only connect at N speeds if you exclusively set it to that mode. The compatibility mode will only go as fast as G. Does yours connect at N while allowing slower connections from other devices at the same time?