The NSW Strata Schemes Management Act (Schedule 2) requires that the Agenda of General Meetings is provided to Owners a minimum 7 days before that Meeting is convened, and that’s primarily intended to ensure that everyone has adequate time to digest the content, to form their queries if any, and all so that they’re in a position to cast informed votes on all Motions.
In your case, there a few anomalies that will make it even more difficult for Owners to decipher the financial and other information that’s been provided as addenda to the original Agenda in advance of the Meeting, and that’s the important thing to take into account in deciding if everything is “OK”.
So if the most recent addendum to the Agenda was received by all Owners a minimum 7 days before the Meeting date and Owners can decipher everything or at least know what clarifications to seek on the day, then in my opinion that’s “OK”, and if otherwise, the Strata Manager should be if possible provided with a list of clarifications and be instructed to defer the Meeting to a date that at least complies with that prescribed 7 day window.