Bests & Worsts Reviews from Amazon

I have used Last pass for many years. One reason I got it was to share the app with all my Android devices, as well as Windows. Now I have to pay $30 a month for another password keeper if I want to use this app on my other devices --all because someone decided that the Fire and Last pass wouldn't work together. Cynic that I am, I don't know whether to be ticked off at Amazon or Last pass. Is someone looking for kickbacks? Is there some other nefarious reason? Why can't they tell you upfront what the cost of this app is going to be? Has I known, I wouldn't have downloaded this.to begin with.