i need to update my thumnails image in alexa .i went to their website and applied trough the URL. it said it will update in 24-48 hrs. but it didn't . i have done this for quite some time in the past do i need a Amazon API to update my thumbnails.i see some mebers here in DP who get their thumbnails updated very soon after a change in their site design. is there a quick way to update the thumbnails. PS:i already have a thumbshot in alexa and only need a update