FF:RK just had a huge update last night that changed a lot of the UI and the app’s overall flow. For the most part, I see them as positive changes, especially the changes to inventory.
Last week, I managed to snag a number of FFVI characters during the event.
And I did a random bonus quest and unlocked Lightning as well. I do have her relic sword, but I’m just not all that sold on her character, to be honest, so we’ll see if I ever level her.