Bests & Worsts Reviews from Amazon

I purchased two bottles of this product, for myself and my husband. We have both been using it every day, but it is too soon to tell if it is making any difference in our digestion, other than the fact that my husband has not complained about his stomach hurting after meals for the past few days (which is unusual). Both bottles we purchased had a sticker on the top, saying "get your next bottle FREE visit {website}", which made me very excited, as I know that it is usually difficult to tell if a supplement is working after just one month of use. However, when I went to the website, a white page popped up, with the statement, "Sorry this promotion is not available anymore". Why would the seller not offer the promotion, while there are still bottles being sold with the promotion sticker on top of the bottle? Why not just go ahead and honor the promotion, or remove the stickers from unsold bottles, so as not to get customers' hopes up? Very frustrating...