@Siva Teja Sivakavi I believe you have enabled autosuggestions on the Hosted UI configuration page and then checked on the production instance tab. Autosuggestions take upto 24 hours to get updated, so if you have done it less than 24 hours before then please wait and check later.
Enable it from here:
During publish you might see this message.
Also, other requirements mentioned here should be fulfilled for the feature to work.