@MicaelBouzelmat Greetings Micaël! Currently, we still haven't received any information from the dev team regarding this but rest assured, we will post an announcement as soon as we receive an update.
@Shadowcloud4 Greetings unpocomuerto! Could you try selling your items individually or one by one instead of by bulk and then check if it will count towards the mission.
@Matto70810550 Hello Matto, we will be sending your request for more metallic appearances and costumes as feedback to the developers for review. We hope that future changes in the game will introduce new gear to your liking. :)
@Shadowcloud4 Hello Unpocomuerto, we received an update from the development team that using the "Sell" button immediately, instead of "Selecting" one and then using the "Sell All" button, should resolve this. If the issue persists, please send us a ticket for us to further assist you.