Download any free app, and then try downloading Things again.Then go to App Store → Updates to download the update. Sign out of the App Store (not iCloud) and reboot your device.If it’s not, quit the app and move it there, then try the update again. Make sure that Things is in your Applications folder.Please try again later”, see the following steps to try to resolve the issue: If you try to update or download Things unsuccessfully, or you see a warning that says “ Unable to Download App.