[notgoo]

Is it possible that Google widevine killed support for amlogic devices?

If only it was limited to that. More information in this thread, a few pages back. It sums up to having a combination of:
 

• HDCP support (which Kodi doesn't have)
  
• hardware secure capabilities (as in Google/Amazon proprietary hardware)
  
• a hacked widevine.dll/so binary (which is even easier than supporting the library properly, lol)
  

So yeah, you're stuck with SD quality like the rest of us peasants. I'd rather give up Prime than buy one of those terrible Fire/Chrome sticks.  

Thank you Varstahl for the explanation.
So, out of curiosity, I rebooted my Mecool KI Pro to "native" Android and tested Amazon VOD on there.
To my surprise Kodi on Android can now play Amazon content at 1080p resolution whereas kodi running on Coreelec on the same device is only able to reach 540p resolution.
So, if I want to play content at 720p resolution (S905 devices don't have enough power for higher res) my only chance is to reboot to Android and run kodi from there, right?