Gave that a try, twice -- same result, unfortunately. It seems that there is a process that retrieves a key from Google Play? that registers the product. That's not happening on the Amazon side. Unfortunately, I can't really use this on my phone (too small), which is why I wanted to use the Kindle F...

Hello, I purchased Qvadriga in the Android App store, as there wasn't an option to do so in the Kindle store. I usually do this and sideload the title to the Kindle Fire, as playing most games on my Android phone tends to be difficult. Doing so with Qvadriga resulted in a message that the title is c...