Keyboard almost working

[Sercurio]

Hi,
Firstly, thank you for your library.

I'm trying to get an IBM keyboard (kb-8926 AZERTY) working. Same as picture

Almost all functionality works except:

• When pressing "Verr num" key, "Défil" LED lit instead of "Num".
• When pressing "Maj Lock" key, "Num" LED lit instead of the up arrow, but input is correct (Maj character)
• When pressing "Arrêt défil", the keyboard stop working.
• Only the "5" key of the numeric pad doesn't input a code.

I'm working on a Xiao RP2040 MCU and use this level-shifter circuit:

I tried all the combination of #define IRQs, but it seems to better work without.
Furthermore, I tried to get the scan code set, and it returns 2.