I tried a couple more times for the Poly (9/18 thru 9/28) - no discounts at all. We talked a lot about whether or not staying at the Poly would make or break our vacation - and decided that it wouldn't be the end of the world. We have only gone to WDW 2 times - and stayed at the Poly both times. It has been 18 years since we have been there, so we may as well go outside of our comfort zone!
When we looked at the Animal Kingdom lodge this morning, we realized we could save a
lot of money with a standard room+
free dining compared to what we owed on our Poly reservation. We are a little concerned about the location of the resort when it comes to early morning reservations; but with the amount of money we are saving, we can just take cabs to the really early ADRs. There are several things we will miss about the Poly (especially the location), but we are now looking forward to exploring something completely new to us. Of course, there are a lot of things about WDW that will be completely new to us after 18 years!
I noticed that the Poly now shows Standard Room available for that time frame - before I changed, it showed no availability at all for those dates. It still won't let you apply the discounts to it, but maybe if enough people like me 'jump ship', then others will get some discounts! Good Luck to everyone!