This game needs TTG account. I am wondering if there is a game code for my TTG profile?
Hmmmm... TT wrote on their site, that you will see your games on your accaunt if you buy them from their store. Not GOG or Steam.
There is the option to connect your TTG account to the game, all you need is your username and password, no code is required, and it's all optional. This also enables cloud saves. As you say, it does not mean that you will find the game available in your TTG account.