Originally Posted by Steve M

The wording does seem unambiguous to me. I wonder if it's a matter of what they have loaded into whatever makes auto-price work is different than the text description of the fare, and that agents are used to accepting that "auto-price is always correct" and work backward from there when interpreting the text.

Separate from whether your second stopover should or should not be free, there is the matter of the change fee. From the way it looks to me, you are liable for whatever the stated change fee is because you, well, are changing the flights. The fact that you are entitled to a second free stopover is a separate matter from whether the change fee applies - you'd get that for free, had you booked it that way at time of original ticketing.