How do I update the game

I got the game a while back and deleted the email to download it, after trying to update it after opening the game it brought me to a page that had hidden emails i didn’t know how to open. If you you give me a hand and help me figure this out that would be great thanks.

Check out this page
http://www.greenheartgames.com/game-dev-tycoon-product-updates/

Hey,

If you purchased the standard edition from our website then you can email orders@fastspring.com and request that your order fulfilment email be resent. Please keep this email safe as you will need it in the future.