The auto pots should be configured not by percentage.
Sample: If your HP / MP is 2000/1000, the bot should be configured to be 1900/900 so, when your HP/MP hits 1900/900 it will do auto pots. That's how it should work. Trust me!
regarding auto buffs, I still haven't figure it out but I'm trying since CR will now be in commercialized.
Well just hit thanks, if it works for you!