The EXP card didnt block the EXP as intended !!

I am a grinder so i just wanna farm the thing i want without getting any kind of exp, so i bought multiple EXP card, use it  and it didnt work correctly
The EXP card only work with the BONUS exp i get from repeating the mission ( Ex :the bonus exp you get after finished F1 cherry blossom ),It cant stores or block the exp from completed mission,Kill monsters .... I just want something like pure block exp from all soures, it really annoying for player want to stay at some level for farming at specific map ( dungeon) a while before leveling up (like me), can you put something in the consumable or just fix the problem with the exp card please?? ( alot of people ask for this, the only way to lose exp now is get kill)
I really apreciated if you do so, sorry for my bad English

strange

EXP Card will not block exp from all sources even if it "somehow worked".

I made it so you lose more exp whenever you die, so you should be using that.

It does work.  Only if you are not in party.