The drop-down menus don't work when selecting Class for parents or Parent for children in the Awakening character section. I don't know if this is the problem, but according to the source code "chargrowth13-2.js" is missing.
https://serenesforest.net/awakening/characters/maximum-stats/complete/ https://serenesforest.net/awakening/characters/growth-rates/full/