hi
im a player from Taiwan
recently, i have been grinding radiant fire crystals
i was able to find them in D24 or deeper levels

but a recent update seems changed the rule
now they can only be found in D28, BUT NOT ALWAYS
the amount dropping is like 0 ~ 12 crystals each run
and sometimes i can only find shinning fire crystals

i have to say it is very frustrating to find no radiant fire crystals after completing D28
i can accept it only drops in D28
but can you change it to ALWAYS drops in D28?