I try to upgrade level 3 to level 4 but when I choose a sacrifice, it says "cannot complete this action" Level 3 character is fully ascended. Do the sacrifices need to be ascended as well. BTW sacrificial characters are NOT locked
Can you post a screen capture of the message ? I don't think it's the proper message . If anything my guess is you're trying to rank up a level 3 that is not Level 30 .