Earlier quoted context omitted.
Well, for me at least, amazon's copycat worked first time out of the box. Chromecast, alas, turned out to be an expensive plastic brick.
No offense but I bought a lot of chromecast and even my most tech inept family users have "moved to the tech age" with it and never bother me to get it working. I'm sure amazon thingy works just as well, but your trouble with it are more anecdotal than the rules.
Hence why I said 'for me at least'.