The new fb system kicked in, I believe, on May 1st - I would assume if it's already changed - new and old sales that weren't rated will be rated with the new way.
I think on the 14th,although I heard someone say the 20th.Check the ebay announcements.Either way it sucks.I believe feedback that has not been given by that date will be under the new system then.Ebay will also be banning comments on feedback as well so you can only leave a Positive and no commnets.They did this for fear of retaliation comenting.
Live help is just a computer that sounds human.you never really get a person.They suck.I'd expect the feedback stupidity to start very soon if not already.Better to sell elsewhere