Can not do quick save

Hi guys.
I have a problem with quick save, I want to do this by the hotkey + R1 keys but for some reason it does not work.
All other shortcuts work properly: change a game slot, turn up\down the volume, turn off the games etc.
Anyone know what the problem is and can help?
Uses EMUELEC 4.3 on a Ugoos AM6 Plus device.