Can't access the Tech Demo

So I bought this game a long time ago off the site. I have my Steam key but now I dont have the tech demo v2, and that's the part that I really want. I have heard you were supposed to get an e-mail from SendOwl, but it has been deleted through time. What do I do?!

Hi,

Hi. if can't find email from Send Owl ( @sendowl.com ) with the links to the Steam keys, then contact Bugbear here with your details, like the email address PayPal used:

support@bugbear.fi

Neither can I...

I have benefited from your information a lot.