Disconnect between scheduling emails & calendar invites

Hi there,

I recently updated my Zoom information and applied this to all of my initial and follow up emails (change in access password) - however, the new information is only showing up sometimes for clients, then not for others. Even with the same email

Example:

Client 1: Confirmation & Follow up reflect new password

Client 2: Confirmation & Follow up reflect OLD password

Calls booked on the same day.

Also, the listed information in the calendar invite reflects the old password as well, across the board. Any ideas on how to fix this or what user-error I've committed? 

Thanks in advance!