I can't open either link, although they both look the same to me.

BTW, have there been any reports recently of people not having trouble with a reciprocity fee sticker in the passport from the "plain white" period? I guess this time my argument should be to show them my Argentina entry and exit stamps from last year to point out that it worked then.

Are airline staff generally aware that someone with the passport sticker won't have a printed receipt for the fee?