ok, by default only the higher discount of either the coupon or normal discount(s) gets applied
that’s intentional and by design.
that said, i cannot see any reason why there should not be an option to allow for both to be applied.
as i want to add something else to the plugin, let me see what i can do there.
might take a few days to implement this.
once you see an update to the plugin available , install it and there will be some sort of checkbox or something (not sure yet until it’s done) to allow for both to be applied cumulatively .