I search my website XXX.com on website named statscrop.com. which syas that your seo is bad because XXX.com and www. XXX.com are showing the same page. If duplicate content in seach index can hinder your pages' performance in search results. As a result, the ranking of the site may suffer, or the site might be removed entirely from the Seach index, in which case it will no longer appear in search results.. anyone can help me step by step how to settle this problems ? ty..