Pretty much as the name states, whenever I check for updates on games it gives that message.
Is it possible to tell us some of the games specifically you are having the issue with. Also, are you on the latest version of the app?
Yes, latest version available. The game in question was House Party, which now also says it's not available on Windows. I was trying to uninstall and reinstall when I discovered that. This is untrue. I can download it on the site no problem.