Stop Resource Calendar Accepting Meetings With Conflicts

I have a client that both of their resource calendars (small conference room and conference room) are allowing meetings to overlap, even though I have set it to not allow both via PowerShell scripts and the mailboxes themselves. I am at a complete loss on this and could use some guidance. I have run these scripts in the past and they worked, however, they are no longer doing so.

Goal:

Auto Accept or Deny the meetings based on conflicts - conflict = they all get denied

Auto reply stating the meeting was rejected due to conflicts and to check the scheduling time frame.

Allow for months worth of events to be created in a batch - Hence why the max amount of days were set.

Manage Delegate Settings - Set to Auto Accept\Deny

Manage Booking Settings - 'Allow repeated Meetings' selected; 'Automatically decline meetings outside this limit' selected with 1080d/24h set.

Followed the steps here to gain access to the account and set 'Allow Conflicts' to 0 for both options: Resource scheduling settings - setting meeting conflict rate to 0%

I have also run the following PowerShell scripts:

>Set-CalendarProcessing -identity "smallconferenceroom" -ConflictPercentageAllowed 0

>Set-CalendarProcessing -identity "conferenceroom" -ConflictPercentageAllowed 0

>Set-CalendarProcessing -identity "smallconferenceroom" -MaximumConflictInstances 0

>Set-CalendarProcessing -identity "conferenceroom" -MaximumConflictInstances 0

>set-calendarprocessing -identity "smallconferenceroom" -allowconflicts $false

>set-calendarprocessing -identity "conferenceroom" -allowconflicts $false