Zigbee Conbee2 won't connect on previously working configuration

Hi all,
I’ve got a weird issue:
In Devices for Zigbee Conbee2 it says “Failed to setup”
In Log review:


Logger: homeassistant.components.zha.core.gateway
Source: components/zha/core/gateway.py:172
Integration: Zigbee Home Automation (documentation, issues)
First occurred: 8:53:21 AM (3 occurrences)
Last logged: 8:53:28 AM

    Couldn't start deCONZ = dresden elektronik deCONZ protocol: ConBee I/II, RaspBee I/II coordinator (attempt 1 of 3)
    Couldn't start deCONZ = dresden elektronik deCONZ protocol: ConBee I/II, RaspBee I/II coordinator (attempt 2 of 3)
    Couldn't start deCONZ = dresden elektronik deCONZ protocol: ConBee I/II, RaspBee I/II coordinator (attempt 3 of 3)

Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/components/zha/core/gateway.py", line 172, in async_initialize
    self.application_controller = await app_controller_cls.new(
  File "/usr/local/lib/python3.10/site-packages/zigpy/application.py", line 144, in new
    await app.startup(auto_form=auto_form)
  File "/usr/local/lib/python3.10/site-packages/zigpy/application.py", line 125, in startup
    await self.initialize(auto_form=auto_form)
  File "/usr/local/lib/python3.10/site-packages/zigpy/application.py", line 110, in initialize
    await self.permit(0)
  File "/usr/local/lib/python3.10/site-packages/zigpy/application.py", line 932, in permit
    await zigpy.zdo.broadcast(
  File "/usr/local/lib/python3.10/site-packages/zigpy/device.py", line 516, in broadcast
    return await app.broadcast(
  File "/usr/local/lib/python3.10/site-packages/zigpy/application.py", line 747, in broadcast
    await self.send_packet(
  File "/usr/local/lib/python3.10/site-packages/zigpy_deconz/zigbee/application.py", line 419, in send_packet
    raise zigpy.exceptions.DeliveryError(
zigpy.exceptions.DeliveryError: Failed to deliver packet: <TXStatus.MAC_CHANNEL_ACCESS_FAILURE: 225>

I run Raspberry Pi4 with native HA OS, this stick has been working for months on a long extension cable.
It is recognized by my windows PC when I connect it directly, It is recognized by RPi, but does not do anything. I can’t reset the network (comes with an Error), nor any other repairs I can see.
I’m not a very proficient HA user, so I might be missing something.
Also, between working and non-working states there was a HUGE rainstorm with lightning and all, and my roof leaked and few drops of water might have gotten onto the conbee. I was quick to move it away but it’s possible it’s got some water on it.
It was working immediately after though.