Jett's Core Aura is glitchy

The problem is:
- The 300NX cubes NEVER rank you up at all. I used about 60 of those prior to getting ranked down to the lowest possible tier (blue, with a max stat bonus of +20) and about 5 more afterwards before figuring that out.
- The 1,300 NX cubes CLEARLY state in their description that they do not affect stat ranks, yet these are the cubes I had to use to get my core aura to rank back up to gold.

ok the 300 nx can rank you up (your jsut super unlucky) cuz i got to gold ranking with these cube only i did get some down also
and the 1,300 nx idk about that ranking up ( it never happen to me )