It is the responsibility of the account holder to secure their platform accounts.
Klei Support cannot help with restoring or recovering items that have left a Klei account for any reason, including trades, market transactions, or account sharing.
Klei Accounts only uses third party platform login systems. If you believe your platform account has been compromised, your best next step is to contact your platform’s support team, as we do not have the appropriate authority to handle their account systems.
You can find more detailed information about securing your platform account by visiting the support sites for each platform listed below.
Steam: https://help.steampowered.com/en/wizard/HelpWithAccount
PlayStation: https://www.playstation.com/support/account/
Xbox: https://support.xbox.com/help/account-profile/browse
Nintendo: https://en-americas-support.nintendo.com/app/topics/detail/p/992/c/737
WeGame: https://kf.qq.com/index.html
You can also find additional Klei Account self-help tools guides such as for rolling back unintentional item unravels, account linking, account unlinking, and more on the Klei Support site.