Piantor Right Half (slave) Not Working

[Heinrich-XIAO]

It was working fine until it randomly stopped working. I feel like it has to be a hardware issue since software is generally predictable. I notice that when the issue was first happening, it would register one or two keys at the start and then stop. It is no longer doing so, either because I haven't done thing that would replicate it or it truly stopped. I've checked the TRRS cable connecting them and there are no shorts and everything connects correctly within the cable. After that, I checked if the pins that are supposed to connect for the TRRS cable were connected, and indeed they were. The left side is a WeAct that came with the keyboard and the right side (slave and not working) is a RPI Pico (not 2). Plugging in the right side on its own works fine except the keys are different which is expected.

Firmware: QMK then tried Vial and it still didn't work.

What should I try next?

[mertoldi]

I have the same problem , on windows 11 with 2 raspberry pi pico's

[Nek-12]

Same problem here. Didn't expect this to be mass thing. It's gone really bad to the point of the board being unusable. I'm using USB c connectors though - still have this issue.