I've seen a lot of people with the problem that they didn't get a confirmation e-mail or successfully verified their e-mail but simply didn't get their supply transferred. As for me I can't register to begin with. Once in-game I open up the menu and select the Options. At that point however, unlike described by everyone, I don't get asked to register. I have no button to register in sight. Just the box with the Gameplay settings.
Here's a picture of what I see: https://steamuserimages-a.akamaihd.net/ugc/933807031691430881/78B219416EC01CD24AF8C8B86F53C05ACB061418/
I already submitted a request but after me for my Steam64ID the support stopped answering me. I've been waiting for 3 days to get a reply ever since. If someone had the same problem please report how you fixed it.