@crinrict I managed to sort out my issue (provided a more detailed response in the thread i started), but thanks for the reply anyway.
@Ahnika21 Whilst this wasn’t relevant to me, it may help you with your issue:
In trying to fix my own game, i found out via reddit that the current version of TOOL by Tmex does have a bug which breaks the event planning feature, so try removing that (and deleting thumb/avatar caches) and see if it’s fixed.
If that doesn’t work then the way I fixed my game was to just start a new save, as i think my issue was hard baked into the save itself.