09/08 may indicate the last day to make an initial qualifying offer. I phrase it this way because, based on what we know, once the counter is activated, say a user makes a purchase on 09/07, maybe their counter will exceed 09/08 in duration for a standard set of number days to see completion
Or an initial purchase on 09/07 would still result in a 09/08 finale. Right now there doesn't seem to be any clarity. The cutoff I see I guess could be extended as it already has.