Was having this issue too, well still am but managed to change some of them at least. So tried resetting everything back to default.
Avoided changing R and the emotes that were assigned to NumPad (Set the emotes that are defaulted to numpad in key 2.)
Managed to change to keys that I wanted for the action bar skills and potion key. The emotes that were defaulted without set keys I was freely able to set to whatever key I wanted. Exited the game. Signed back on, and they were actually saved! :D
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