Hybrid environment - RoomMailbox stopped to autoaccept meeting request

Hi,

In our company we have 10 meeting rooms all with the same configuration to autoaccept a meeting booking if the room is available. But for some reason all of them have stopped to reply. I have tried to grant my user full access to the mailbox and can see that the mail with the request is in the mailbox and I'm able to accept the request on behalf of the RoomMailbox.

Get-CalendarProcessing -Identity "MeetingRoom 1" | fl


RunspaceId                          : xxxxxxxxxx
AutomateProcessing                  : AutoAccept
AllowConflicts                      : False
BookingType                         : Standard
BookingWindowInDays                 : 360
MaximumDurationInMinutes            : 1440
AllowRecurringMeetings              : True
EnforceSchedulingHorizon            : True
ScheduleOnlyDuringWorkHours         : False
ConflictPercentageAllowed           : 0
MaximumConflictInstances            : 0
ForwardRequestsToDelegates          : True
DeleteAttachments                   : True
DeleteComments                      : True
RemovePrivateProperty               : True
DeleteSubject                       : True
AddOrganizerToSubject               : True
DeleteNonCalendarItems              : True
TentativePendingApproval            : True
EnableResponseDetails               : True
OrganizerInfo                       : True
ResourceDelegates                   : {}
RequestOutOfPolicy                  : {}
AllRequestOutOfPolicy               : False
BookInPolicy                        : {}
AllBookInPolicy                     : True
RequestInPolicy                     : {}
AllRequestInPolicy                  : False
AddAdditionalResponse               : True
AdditionalResponse                  : {}
RemoveOldMeetingMessages            : True
AddNewRequestsTentatively           : True
ProcessExternalMeetingMessages      : False
RemoveForwardedMeetingNotifications : False
MailboxOwnerId                      : MeetingRoom 1
Identity                            : MeetingRoom 1
IsValid                             : True
ObjectState                         : Changed

Best regards Brian Lind