Popup referrer filter is not work

Reference: Popup Pro v4.7.0.2

No matter what I do, the "word/phrase" placed in the Allow only filter for referrer does not filter false referrals. For example...

If I add the phrase "no-way-this-should-work", and the referrer value is "http://google.com/aclk?some-guid", the popup will still happen.

We are actually using an adword as the phrase since from what I have read, this is only a direct string comparison looking for the location of the substring...

I can really use some help in figuring this out.