There is a new update of the app! You can download it here
https://developer.concordium.com/testnet/docs/downloads#concordium-id What's new?
We identified an issue when using an identification document with no expiry date (such as a Swiss driving license). The app crashed upon completion of the ID issuance process. This issue has been resolved and you can now download the new version.
The node software is unaffected by this update.