Please help I can’t get past artifact mission 2/3 it says the following 

Equip and ATK type champion with Gauntlets chestplate and boots with ATK (%) as their primary stats

When you select the Artifact mission this is what you see.

You’ve already collected 3 artifacts with ATK (%) as their primary stats and now it’s time to put them to use. 

Equip and ATK type champion with Gauntlets chestplate and boots with ATK (%) as their primary stats

Shiksa said:

I have the same issue and actually equipped 4 rare champions with these items...it is still stuck

Did you equipped your champs after your got this mission?