Having been removed from the Google Play app store for several months, the BookMyne app for Android is finally back. It had been removed because of security concerns.
When setting up the app, search for a library by name, entering "KCPL" as your search. Then choose "KCPL – [any] Branch"—it won't matter which you choose, as long as you select any KCPL location.
Please note that the barcode scanner will not work in this version and the flash screen with the BookMyne logo will not show when the app is taking a long time to load.