Authencation Failed
Usage: http://datafeeds.productserve.com/datafeed_products.php?user=123&password=xxxx&mid=3&format=csv&compression=zip&delimiter=|&dtd=X.X
USER (required) is your affiliate id
PASSWORD (required) is your datafeed password
MID (required) is the merchant id (use mid=all for all your merchants)
FORMAT (default CSV) is the format the data is presented in format=xml or format=csv
COMPRESSION (optional) to receive the file in zip format use compression=zip
DELIMITER (optional) is the field delimiter used for the csv format (default is comma)
DTD (optional) Version of the datafeed (default 1.0)