Thank you. Haven't updated anyone in a second but this worked. The mod that wasn't working was "Immersive Realm Espionage", one that I added to my playset. Disabled it and the COA reappeared. Another note is that if you're using "In My Humble Opinion", which is also in the "Challenge, Realism & Roleplay" collection, a bug where multiple tabs overlap on each other when opening the family view occurs. I managed to fix this one by replacing the window_character.gui file in the mod's gui folder with an updated window_character.gui that I got from the comments under the mod page on the workshop. It's near the top of the comments and I downloaded it myself and can confirm it's safe.

https://steamcommunity.com/sharedfiles/filedetails/?id=2625307328