VXDIAG Benz C6 Truck AXOR 2020 Initialization Failed

Problem: 
I recently got the vxdiag benz c6 doip device and hard drive. It failed to communicate with a Benz truck AXOR 2020 (protocol  Iso 9141-2) and reported error ““Determinining data, wait…” and “Initialization failure, could not establish a link between Diagnose-Gateway and Command Module.” “.
I’m afraid the model is too new to the multiplexer, so tested AXOR year 2016, 2018 and 2019 as well, all fail to connect to the c6 doip.  Any idea?
Vxdiag Benz C6 Axor 1
Vxdiag Benz C6 Axor 2
Vxdiagshop.com  suggestion:
VXDIAG C6 Benz does not support AXOR with protocol Iso 9141-2.
Check vxdiag scan tools supported protocols:
Supported car protocols:

ISO-13400 DoIP
ISO-9141 K-Line

ISO-14230 K-Line

ISO-15765 CAN
SAE-J1850-VPW (GM Class2)

SAE-J1850-PWM (FORD SCP)

ISO-11898-2 DWCAN
ISO-11898-3 DWFTCAN
SAE-J2411 Single Wire CAN (GMLAN)
VAG TP16 CAN
VAG TP20 CAN (SAE-J2819)
VAG KW81 (SAE J2818)
SAE-J2610 SCI (Chrysler)
SAE-J1567 CCD BUS (Chrysler)
SAE-J2740 GM ALDL
SAE-J2809 (HONDA-DIAG-H)
Nissan DDL UART with CLOCK
BMW DS2
Ford UBP
Benz KWFB
Benz MB-ISO

Supported heavy duty protocols:
CAN 125/CAN250/CAN500/CAN1000

SAE-J1939 CAN

SAE-J1708/J1587 On RS485
CAT DATALINK (Caterpillar)

ATA DATALINK (Caterpillar)