i have been trying for 2 days now... to get the blasted thing to REGISTER correctly, i have 2 kindle oasis and an older Kindle Touch. Every time i try to REGISTER it either takes me in a round about way through links to download the Kindle APP and then instead of REGISTERING the DEVICE i'v apparently registered my PC b/c when i transfer the DRM protected books to my DEVICE it still wont let me open them. i'v had these Devices for years and its been frustrating that half the books i buy seem to be unable to be opened. I'v gone to the DEVICE pages in the amazon settings and it does not have a MANUAL REGISTRATION for a DEVICE. its looking like wifi? is the only way to register a device? or am i missing something?
EDIT: It will let me down and read the book on my PC through the KINDLE APP but it will not let me transfer it to any of my devices. so frustrating i miss kobo/sony
people haven't been able to register Amazon devices on a computer for quite a few years (at least 5 that I know of). You must connect to wireless and complete/initiate any registration through the menus on the devices.