iZone Aircon No devices or entities

Hi Community,
My iZone integration worked for a while, now when the integration is auto discovered, it does not load any devices or entities. I have tried deleting and re-adding it, but no change. The debug log says:

2024-11-22 19:08:41.036 DEBUG (MainThread) [pizone.discovery] Datagram Recieved b'iZoneChanged_System'
2024-11-22 19:08:41.624 DEBUG (MainThread) [pizone.discovery] Datagram Recieved b'iZoneChanged_Zones'
2024-11-22 19:08:42.032 DEBUG (MainThread) [pizone.discovery] Datagram Recieved b'iZoneChanged_Schedules'
2024-11-22 19:08:49.449 DEBUG (MainThread) [pizone.discovery] Sending discovery message to addr <HA IP>
2024-11-22 19:08:49.450 DEBUG (MainThread) [pizone.discovery] Sending discovery message to addr xxx.xxx.xxx.255
2024-11-22 19:08:49.450 DEBUG (MainThread) [pizone.discovery] Sending discovery message to addr xxx.xxx.xxx.255

Pinging the iZone bridge in postman looks ok:
POSTing:

{
    "iZoneV2Request": {
        "Type": 1,   // 1=AC unit, 2=Zone, 3=Schedule
        "No": 0,     // Index of type e.g. If Type=2 then Zone number 2 will be No=1
        "No1": 0     // This is not used for AC operation.
    }
}

Gets Response:

{
    "AirStreamDeviceUId": "xxxxxxxxx",
    "DeviceType": "ASH",
    "SystemV2": {
        "SysOn": 0,
        "SysMode": 1,
        "SysFan": 2,
        "SleepTimer": 0,
        "Supply": 2599,
        "Setpoint": 2300,
        "Temp": 2324,
        "RAS": 3,
        "SysNo": 0,
        "CtrlZone": 0,
        "MasterZoneNo": 255,
        "Tag1": "<loc>",
        "Tag2": "<aircon brand>",
        "Warnings": "none",
        "ACError": " OK ",
        "EcoLock": 1,
        "EcoMax": 3000,
        "EcoMin": 1500,
        "NoOfConst": 1,
        "NoOfZones": 11,
        "SysType": 320,
        "ConfigVersion": 3,
        "StaticP": 4,
        "iSaveEnable": 0,
        "iSaveOn": 0,
        "LockCode": "xxx",
        "LockStatus": 0,
        "LockOn": 0,
        "FanAutoEn": 1,
        "FanAutoType": 1,
        "FanCapacity": 1400,
        "FanUnitCapacity": 25,
        "FilterWarn": 6,
        "OpenDampersWhenOff": 0,
        "iZoneOnOff": 1,
        "iZoneMode": 1,
        "iZoneFan": 1,
        "iZoneSetpoint": 1,
        "ExtOnOff": 0,
        "ExtMode": 0,
        "ExtFan": 0,
        "ExtSetpoint": 0,
        "DamperTime": 0,
        "AutoOff": 1,
        "RoomTempDisp": 0,
        "RfCh": 5,
        "WiredLeds": 0,
        "AirflowLock": 0,
        "AirflowMinLock": 1,
        "OutOfViewRAS": 0,
        "AcUnitBrand": 2,
        "AcUnitBrandSet": 0,
        "OemMake": 0,
        "CpuType": 0,
        "AutoModeDeadB": 150,
        "ReverseDampers": 0,
        "Scrooge": 0,
        "HideInduct": 0,
        "ShowActTemps": 0,
        "Pass": "wamfud",
        "UseInductEnergy": 1,
        "LockZoneNames": 1,
        "InRh": 63,
        "InTVOC": 165,
        "IneCO2": 459,
        "CnstCtrlAreaEn": 0,
        "CnstCtrlArea": 100,
        "UnitOpt": {
            "RA": 1,
            "Master": 1,
            "Zones": 1,
            "History": 1,
            "SlaveOpt": 1
        }
    }
}

So I am not sure if this is an iZone integration issue or a more general issue with a corrupt configuration or something.
Thanks.