purchase code not workig

Warning : file_get_contents(http://marketplace.envato.com/api/edge/RedKings/td9yq1tbagu5r7m2xfhxuzjksjb6y1or/verify-purchase:http://marketplace.envato.com/api/edge/RedKings.json): failed to open stream: HTTP request failed! HTTP/1.1 429 Too Many Requests in /home/feedscom/pix.69feed.com/king-include/king-pages/admin/admin-king.php on line 51

m getting this error while installing king media script on my subdomain

Hi

Please contact Item Author to get item support How to Contact your purchased Item Author and let them know. Item author will be happy to assist you.

Please be noted each purchase code can be used only for one end product (single use).

Thanks