I have the NOOK app on my phone. Bixby, at this point, can not understand "nook" and either registers it as "look", "knock" or "Knox". I've made it to level 12 by basically saying "open NOOK" and then correcting and choosing "Open an app" over and over again.
Im taking mine to 13 and stopping for a bit. Its up to 3000 between levels now. Ive only got 2 more Samsung pay rewards left to earn so I need a minimum of 12,000 points. Thats a whole lot of repeating the same thing over and over again. Plus its destroying my battery.