Strangely I've had that survey three times and and all worked fine. Had a survey twice yesterday where it asks you to tick a box against the relevant question and it states you need to tick the box to continue even though I had? Tried all the tricks like refresh etc but nothing worked.

The thing I hate are when they send you a survey to a demographic profile and they fail you because your the opposite sex. Where as some surveys fail you for an error in your birthdate, the survey should not be sent to the wrong demographic in the first place.
Just makes me want to lie.