Charger not detected

[stijnilsen]

I have a webasto Next. I followed the installation steps, but only have 1 device, "central".
I configured the charger to use: ws://192.168.2.86:9000 as the OCPP address.
But still, only 1 device is shown.
After reading #1637 (comment), I understood that I cannot force it the charger. But the charger is not shown. I already tried a different port (9001 on both ends). I tried ws://homeassistant.local:9090, I think I tried all.
Some days ago, I managed to get 2 devices, so my charger was detected, I could see some measurands to be read, like the firmware version. But the value was correct for a couple of minutes and then turned unavailable for hours. For this reason, I deleted the entire integration. And now I cannot add the charger anymore.
Any help is more then welcome. I can ping both HA raspberry and the charger. How would I be able to debug this.
I saw a message on the discussions that somebody managed to connect the Webasto Next. Very curious how to do this. Thanks for your help,

Update 19:11 UTC:
I updated the ws address to ws://192.168.2.86:9000/, adding the last "/"
Now I see the following in the HA debug logs:
2025-08-03 20:31:59.637 ERROR (MainThread) [homeassistant.config_entries] Error setting up entry central for ocpp
Traceback (most recent call last):
File "/usr/src/homeassistant/homeassistant/config_entries.py", line 749, in __async_setup_with_context
result = await component.async_setup_entry(hass, self)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/config/custom_components/ocpp/init.py", line 104, in async_setup_entry
central_sys = await CentralSystem.create(hass, entry)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/config/custom_components/ocpp/api.py", line 167, in create
await self.hass.async_add_executor_job(
...<5 lines>...
)
File "/usr/local/lib/python3.13/concurrent/futures/thread.py", line 59, in run
result = self.fn(*self.args, **self.kwargs)
File "/usr/src/homeassistant/homeassistant/util/loop.py", line 201, in protected_loop_func
return func(*args, **kwargs)
FileNotFoundError: [Errno 2] No such file or directory
2025-08-03 20:47:55.771 INFO (MainThread) [custom_components.ocpp] Websocket Subprotocol matched: ocpp1.6
2025-08-03 20:47:55.771 INFO (MainThread) [custom_components.ocpp] Charger websocket path=/NEXT-WS108441
2025-08-03 20:49:00.301 INFO (MainThread) [custom_components.ocpp] Websocket Subprotocol matched: ocpp1.6
2025-08-03 20:49:00.302 INFO (MainThread) [custom_components.ocpp] Charger websocket path=/NEXT-WS108441
2025-08-03 20:50:05.285 INFO (MainThread) [custom_components.ocpp] Websocket Subprotocol matched: ocpp1.6
2025-08-03 20:50:05.285 INFO (MainThread) [custom_components.ocpp] Charger websocket path=/NEXT-WS108441
2025-08-03 20:51:09.782 INFO (MainThread) [custom_components.ocpp] Websocket Subprotocol matched: ocpp1.6
2025-08-03 20:51:09.782 INFO (MainThread) [custom_components.ocpp] Charger websocket path=/NEXT-WS108441
2025-08-03 20:52:14.373 INFO (MainThread) [custom_components.ocpp] Websocket Subprotocol matched: ocpp1.6
2025-08-03 20:52:14.373 INFO (MainThread) [custom_components.ocpp] Charger websocket path=/NEXT-WS108441
2025-08-03 20:53:19.075 INFO (MainThread) [custom_components.ocpp] Websocket Subprotocol matched: ocpp1.6
2025-08-03 20:53:19.076 INFO (MainThread) [custom_components.ocpp] Charger websocket path=/NEXT-WS108441

Update 19:22:
I now had an add buttont on the OCPP device view. I could add the charger now.
But all entities are unavailable. When I click on one. All entities report "This entity is disabled".
How can I enable the charger?

[drc38]

You may need to power down and power back up the charger so that it completes the discovery process properly once the central system is setup.