No response to "Channel Request"s sent by GPD. (Zigbee2MQTT)

Hey,
I am quite new to Z2M, switched over because of the ZGP support.
I have an acti9 powertag (temperature sensor) that is GP-only, and that I wanna add to my network.
But I just can’t pair it.
I have never added a zgpd into my network before through Z2M, so this is my first time. But it works just fine using a custom CLI.


What did you expect to happen?

After I reset my sensor by holding a button for 3 blinks, a Channel Request is sent, the proxy picks it and sends it up in a Commissioning Notification (picture attached).
But there is no response.
I put logs on debug level, but they’re very minimal. I can’t see everything.
I tested on the dev branch, same thing, no response from the sink.

Insert picture here


Zigbee2MQTT version

2.7.2-1


Adapter firmware version

7.5.x


Adapter

CP2102N_USB_to_UART_Bridge_Controller


Setup

Setup :
Coordinator/dongle : efr32, mg24 (zigbee emberznet 7.5.x SDK)
External GPProxy : Philips Hue Light Bulb E27 A60
HA OS 16.3 on Raspb. PI 5 (Z2M as add-on)


Reference

For anyone following this in the future, the original GitHub issue is here:
:link: No response to "Channel Request"s sent by GPD. · Issue #30830 · Koenkk/zigbee2mqtt · GitHub