Item mix: to buy a better recipes u need to have a specific level of manufacturing but to lvl up the manufacturing u need to mix items but its imposible to get the materials for mix, i never got any... do you guys know if there is a way to buy the mats o something?

Equipment upgrade: which stones are necessary to upgrade the items? because i cant upgrade anything with the stones with the U15 in the name...

I've never gotten a single recipe for mixing (except for during the mixing quest) or any of the items needed to upgrade equipment past level 20 in this beta or the last.

with the U15 stones u can only upgrade equips LV 15 or less

how can i upgrade the items lv15+ then?

stones without U15 in the name xD

i got 1 in a quest

i dont know if it drops (or where it drops)

I got 6 of those stones