Fail to Equip after set item was upgraded!

Affter i upgrade base for Angelic Sickle i cant equip it even if it show that i am in the green with stats and level!!?? Same with chest also angelic one cant equip it affter i upgraded the base and that was on laddder alts! Blizz any clue!?

I am having the same issue. I upgraded the set belt “Arctic Binding” and my character is unable to equip it. The character meets all the attribute and level requirements (Str-20, Lvl-25), and my character (Str-80, Lvl-25) cannot equip the belt.