No, you cannot merge your War Robots profiles from Facebook to Amazon. War Robots does not support cross-platform gaming, and profiles cannot be transferred between different platforms like Facebook and Amazon.
This means that if you start playing War Robots on Facebook, your progress, purchases, and achievements stay on that platform. You would need to start fresh if you decide to play on Amazon.
Many players find this frustrating because they invest a lot of time and money into their profiles. Unfortunately, the game’s current setup doesn’t allow for any profile merging or transferring.
If you want to play on a different platform, it’s best to choose one and stick with it. Hopefully, future updates to War Robots may offer more flexibility in this area.