I had the same problem with MyPoints posting to my account but I called their toll free number and they credited me correctly.

For the More.com offer they just took my order number and the points posted the next day.

Someone had listed the toll free number before in this forum but I don't have it with me now.

Just a further note, I had been having trouble with referrel points posting at MyPoints and today they sent me an e-mail to let me know that the points had been credited and that they had been having technical problems. I am not sure whether I believe them based on their track record but the points are there so I am satisfied.