Unable to add spells above level 0

[marauderbear]

I am attempting to create a portfolio with multiple party members and monsters for use in a one-off adventure. I imported several of the base characters from the encounter builder, and now I'm adding a few customizations to make the characters work a little better in the dungeon. But when I try to modify the list of memorized spells for the wizard, I can only add level 0 spells. There are several spells already in the spell book for 1st and 2nd levels, so that isn't the problem. Am I missing something?