Download the signer certificate: FrenchWithKids.cer. Double-click it → Install Certificate → Local Machine → Place all certificates in the following store → Trusted People.
Once installed, the app checks this site every time it launches and quietly installs a newer version when one is available. No reinstalling, no re-running the command.
Good to know
A microphone is required — the child answers by speaking.
On first voice use it downloads the on-device speech model (~145 MB) once; that needs internet that first time, then it works offline.
Speech recognition and scoring run entirely on the device. Nothing the child says leaves the computer.