It’s gone from my Steam library, the game is still on my computer but it’s gone from my library,
You’ll need to reach out to Steam or 2k support. Unfortunately TRS won’t be able to to do much as they don’t have access to Steam’s information on your account.
I will shutdown for tonight and try again tomorrow, if it doesn’t work I will reinstall it, if that doesn’t work I will try steam, thank you.
Best of luck to you!!