Signal K not catching Can traffic

[ALROCHARARI]

Hello,

I'm lost trying to find what I'm doing wrong.
Let me try to explain what is my problem.

My installation:

    Raspberry PI 4 Model B Rev 1.4 8GB
    PICAN-M with CAN-Bus Micro-C, RS422 connector NME0183, 3A SMPS
    NMEA 2000 test network
    MAIANA CAN version with MAIANA base kit

My configuration:

    Debian GNU/Linux 11 (bullseye) with latest patches
    Architecture aarch64
    openplotter-can/bionic,bionic,now 2.2.2-stable all [installed]
    openplotter-dashboards/bionic,bionic,now 2.2.3-stable all  [installed]
    openplotter-doc/bionic,bionic,now 2.2.1-dev all  [installed]
    openplotter-i2c/bionic,bionic,now 2.2.1-stable all  [installed]
    openplotter-maiana/bionic,bionic,now 2.1.2-stable all  [installed]
    openplotter-network/bionic,bionic,now 2.1.5-stable all  [installed]
    openplotter-opencpn-installer/bionic,bionic,now 2.2.3-stable all  [installed]
    openplotter-serial/bionic,bionic,now 2.2.3-stable all  [installed]
    openplotter-settings/bionic,bionic,now 2.9.1-stable all  [installed]
    openplotter-signalk-installer/bionic,bionic,now 2.4.2-stable all  [installed]

My problem:

    MAIANA device     [Working correctly]
        Catching GPS signal: led for GPS signal green on device when antenna correctly positionned outside
        Device transmitting GPS packets on the CAN bus: packets visible when using candump in command line

    CAN Bus 2.2.2     [Working correctly]
        MCP2512 connection defined correctly: traffic is visible when activating the candump function.
        Connection has been added as "can0" to SignalK.  Tool is displaying correctly the connection identifier.

    Signal K 1.42.00
        "can0" connection is listed correctly with status "Connected to can0"
        Parameters:
            Data type: NMEA2000
            Enabled: Yes
            Logging: Yes
            ID: can0
            NMEA 2000 Source: Canbus (canboatjs)
            Interface: can0
            Use Can NAME in source data: Yes
            Filters: No
            Source Priorities Settings: Empty
        No error reported

        Problem: 
            No connection activity reported. Deltas/second is always at 0 for "defaults" and "can0"
            Total sever Signal K throughput (deltas/second) is always at 0
            In Signal K Instrument panel version 0.22.1 I have only 1 dash "validation. MAIANA" which is always at 0

Can you please help me?
Thanks in advance for your help.

Best regards,
Raoul