Indexed pages are removed automatically

Selected answers from the Dumb SEO Questions Facebook & G+ community.

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  Mallikarjuna S: Indexed pages are removed automatically in Google ?
  
  Hi Community
  
  In few weeks ( 3 weeks) back when i checked my website indexed pages in Google with site: website. that time its showed my important pages in Google but now it's not showing that page.
  Even i submitted more than 5 times in search console by using fetch as Google. but still it's not indexing in Google
  
  What is the reason for this can any one explain me on this
  
  Thanks
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  Jim Munro: Hi +Mallikarjuna S ;. In a previous question you listed your site as www but now it is 301 redirecting to non-www. Is this a recent change? Have you searched for site:nightcafe.in ? You my have to wait a little for googlebot to rediscover these pages.
  
  BTW re: https://nightcafe.in/blog/ . What happens when you click this link?
  
  Consider that it might be in your best interests to stop spamming meta keywords.
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  Mallikarjuna S: Hi +Jim Munro thank you for your replay but not for this website i'm talking about different website.
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  Jim Munro: Aaah, OK. Would you like to post the url so we can look at it for you? :)
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  Mallikarjuna S: Hi +Jim Munro this is the domail https://www.mobtexting.com/ and the important / not indexing url is https://www.mobtexting.com/check-dnd-online.php
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  Mallikarjuna S: Hi +Jim Munro any update on this please..
  
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  Jefe Birkner: On a related topic... If a site has X number of indexed pages, ALL of which were previously blocked by robots.txt, and the robots file has been updated, and now "most" are blocked...
  Is there a way to generate a list, within search console, of all pages are being blocked by robots?