6 stars weapon bought with arena coin is not in my bag

Hi,

I just bought the 6 star confusion weapon with 600 arena coins for warlock. But it is not in the bag.
The category equipment list has the weapon and shows tha I complete the whole confusion set but not in bag

ID: b29bpw
server: Fit land

Please help

d3b44 加師徒,每天上限,請多多指教