After scanning the QR-code, the app is unavailable for iOS 13.

1. This APP will no longer be updated to support iOS 13 or newer versions, we are so sorry for the inconvenience it has caused to you. Basically, we have to recommend that you use iOS 12 or older versions.
2. We do not plan to launch an application for desktop PCs. 
3. Android version 10 and below are still supported.