I am unable to download the app by scanning the QR code.
The Nelko app is free to download. If you get a prompt requiring payment, use your device’s native QR scanner. If your device does not come with a QR scanner, search for the Nelko app through the App Store or Google Play Store.
Use left/right arrows to navigate the slideshow or swipe left/right if using a mobile device
Choosing a selection results in a full page refresh.
Press the space key then arrow keys to make a selection.