Fire Tv Remote Bluetooth (Play/Pause) dont work correctly

Hello

I have an Amazon Fire Stick Remote via bluetooth connected on my HTPC running Linux mint 18. In Kodi some of the remote buttons don’t work.

The button that don’t function are Back Button, Stack button that has 3 lines on it. The rewind button,Play and stop button,Fast forward button. This remote pairs with bluetooth. I tried DL the Key Mapper addon but it doesn’t work.
I tried all the Keymap.xml files on the Kodi wiki none of them worked.

Can someone help ?