10.3.2 on my phone.
10.2.1 on my iPad.
There’s no entry for Game Dev Tycoon under iCloud, Manage Storage on both devices.
I’m also signed in to Game Center on both devices with the same account. I tried signing out and signing back in to Game Center to see if that helps but there’s still no entry under iCloud’s settings.
Side note: When I reinstalled the app on my iPad, the save file on there was deleted. I saw the topic asking for a way to delete save files on iOS, I somehow have the feature they want!