Need help changing WBID Batman: Arkham Origins

[Mirhan52]

So Unfortunately, I registered with an account that no longer exists and the game accepted it. Now I am logged in with an account where I don't have access and can't get the skin. Does anybody know how I could log out or change the account???

[MrSteel300]

i also have arkham origins with all dlc on steam but haven't played it yet, however if i want to change account i would delete steam cloud data but if the account is stored on wb servers and now linked to your current steam profile permanently then i'll either contact support or just game share to another profile. It's not like steam's family sharing is actually meant for a family but more like the same guy

[Mirhan52]

So when I go to the support page there are the following games to choose from to get the best help: Arkham Night, City, asylum but not Origins. I don't know what I could do to get help.
I have already checked if they have an email address for support but unfortunately not, I really want the One Million suit.
My last hope is the family sharing on steam.

[VaLiuM]

What i got from the Steam's support page for the game:

Support website: https://support.wbgames.com/hc/en-us

E-Mail: [e-mail]

Phone: [phone]