They won't have the preteen trait until they are instanced in so make sure you either play the household or visit them so they can load in. I fixed the issue with NPCs not turning into preteens. You're able to disable this notification in the Config File or through the Preteen Settings Pie menu. The startup notification also says the current mod version which makes mod support easier. Startup Notification: I added a startup notification with a link to the discord server for support & also a link to the mods info page. You'll also be able to shrink sims down to preteen height (even works if they aren't preteens) & reset them to their normal height. Download Instructions: Download 'AddTraitsMenu' +'DisallowHumanTraitsForPets' (if using options of PLUS 4/5 Pet Traits)+ download and choose ONE 'MoreTraitsModOptions' you want to put in your Mods folder. You can still edit the auto-assigned traits in the aging-up UI if you dont like them My More CAS Traits is a tuning mod that allows your Sims to have more than 3 Personality (CAS) traits without script or changes to UI.
Preteen Base Settings Pie Menu: This is where you'll have the option to add/remove the preteen trait. My Lifetime Traits is a mod to assign corresponding personality traits when toddlers grow up to child age. It also has a 'Current Settings' interaction that lists out the current settings. Config Settings Pie menu: This allows you to change various settings such as the chance of having dry skin, Agespan length, Enabling Aging, Toggling the Startup Notification.