I bought Witcher 3 Game of the year edition on nov 11 2017 on GOG. I played it about 10 hours and since then didn't play it and reinstalled windows on my computer. When I came to install it again it isnt in my library or my order history. All I have is the email that confirm my order and the order ID.

deleted

The refresh link works wonders. had half my library missing and that fixed it.

Call me mildly doubtful that that you're logged into the account that has TW3.

Or that it took you this long to delurk.

I used the link and made sure I'm on the same account I got my confirmation and still no game.

I linked the email confirmation.

Send a support ticket https://support.gog.com/hc/en-us/requests/new?form=orders