This app has been deleted or is hidden to the public. There is extremely limited to no information about this app.
We don't even have a name, hence why we are displaying SteamDB Unknown App "AppID".
If you see someone screenshot a page like this and add some information/images on it, it is most likely fake.
Every change is tracked in history, and can be directly linked to.
<iframe src="https://steamdb.info/embed/?appid=552400" height="389px" width="100%" scrolling="no" frameborder="0"></iframe>
Initializing graph of a week…
Initializing graph of a year…
|SubID||Name||Billing Type||Last Updated|
|137165||Steam Sub 137165||CD Key||July 24, 2017 – 14:11:20 UTC|
|137166||Steam Sub 137166||CD Key||July 24, 2017 – 14:10:48 UTC|
|137167||Steam Sub 137167||Store or CD Key||July 24, 2017 – 14:09:56 UTC|