Netatmo integration webhook invalid parameter

@cgtobi Hello, I have a problem with the Netatmo integration. I use the dev account and previously I had no problem registering the webhook. Recently (I can’t say exactly when) the webhook registration started to fail. I use a HA container on Synology NAS DSM 6 set up as host mode. The nas is reachable via a reverse proxy running on https and forwarding to localhost:8123

This is the error I get:

Logger: homeassistant.components.netatmo
Source: components/netatmo/init.py:169
integration: Netatmo (documentation, issues)
First occurred: 12:41:18 (1 occurrences)
Last logged: 12:41:18

Error during webhook registration - (“400 - Bad request - Invalid url parameter (21) when accessing ‘https://api.netatmo.com/api/addwebhook’”,)

This seems different from the other webhooks error I have seen and looked for , those are related to 80 and 443 ports this one is “invalid parameter”

I have the exact same problem as you. However mine worked fine 2 days ago and not I get this exact same error and my camera entities are unavailable.

Please let me know if you find a solution.