I am helping a client with his Magento store.
Recently, hundreds of pages all of a sudden have a NOINDEX in there headers.
We have no idea how they got there... and now many pages including his home page have disappeared from Google SERPs.
Would anyone know how to find the cause of this issue? And how to go about fixing it?
His url is: http://www.gnr8.jp/
Any help would be greatly appreciated.