Hey there !

I pay Silvers to upgrade a +4 artefact, the money is debited, the visual informs me that the upgrade is successful...

BUT

...the artefact won't upgrade, remains +4.

A lil more details :

It's a +4 common speed, **** shield with vrit rate sub stat

I press  the "simple" upgrade button (the orange-ish on the left)

ps : I got lagged : my next attempt got it directly to rank 11