Cant upgrade my stuff since the new season started and its really upsetting
What is Masterworking?
Masterworking is an endgame system that allows you to improve the current affixes of your gear. Special crafting materials found in the Pit of the Artificers are used to apply Masterworking on your items at the Blacksmith. This system is extremely important at endgame and when trying to push through the hardest content in Diablo 4.
Masterworking, like Tempering, is a crafting system that will upgrade all the affixes on an item. Only Ancestral Legendary items that have two Tempered affixes or Uniques can be masterworked at the Blacksmith.
TL;DR the old upgrade isn’t available anymore, it’s been replaced by an endgame feature