P2 128x64 mapping issue

Hi,
I am trying to have a panel to work with the smartshield v5 and a teensy 4.1
Panel: p1.875 128x64 32S A2
Chips:
8x VB5658 - HI55502231A
16x ICN2037BP
4x 74HC245
Connector:
R1 - G1
B1 - GND
R2 - G2
B2 - N
A - B
C - N
CLK - LAT
OE - GND

When I try the demo I got something but not readable, row seems to be mixed.

when I try the multiRowRefreshMapping with 128 width, 64 height(nothing else work) and 64Row_Mod32Scan
I get first a strong blue pattern going the full length of the screen one column after one but nothing on the bottom half:
row1: OFF
row2: BLUE
row3: OFF
row4: OFF
row5: BLUE
row6: OFF
row7: OFF
row8: OFF
row9: BLUE
row10: OFF
row11: OFF
row12: OFF
row13: BLUE
row14: OFF
row15: OFF
row16: OFF
row17: BLUE
row18: OFF
row19: OFF
row20: OFF
row21: BLUE
row22: OFF
row23: OFF
row24: OFF
row25: BLUE
row26: OFF
row27: OFF
row28: OFF
row29: BLUE
Then immediately after I have a very fainted green/blueish pattern following the same progression:
row1: Very FAINTED
row2: GREEN FAINTED
row3: GREEN FAINTED
row4: OFF
row5: GREEN FAINTED
row6: OFF
row7: GREEN FAINTED
row8: OFF
row9: GREEN FAINTED
row10: OFF
row11: GREEN FAINTED
row12: OFF
row13: GREEN FAINTED
row14: OFF
row15: GREEN FAINTED
row16: OFF
row17: GREEN FAINTED
row18: OFF
row19: GREEN FAINTED
row20: OFF
row21: GREEN FAINTED
row22: OFF
row23: GREEN FAINTED
row24: OFF
row25: GREEN FAINTED
row26: OFF
row27: GREEN FAINTED
row28: OFF
row29: GREEN FAINTED
then another one blue red pattern very fainted

I try to understand how to create a custom config for this screen but can’t seems to get my head around how this thing work…
Any help?
Thanks

The vendor did ask me to change the decoding from 138 to 5958
probably related to their control system…
Any idea how to translate that to smartMatrix?