N8n - Telegram trigger on message not working

Dears,

I have a n8n instance running form scale apps. It seems to work almost perfect except for Telegram Trigger on message. Actually I can send messages to my bot but I cannot receive some, i get the followinf error:
Telegram Trigger: Bad Request: bad webhook: IP address x.x.x.x is reserved

Where x.x.x.x is my Truenas local IP.

I set the WEBHOOK_URL and N8N_EDITOR_BASE_URL to match my domain, everything is behind npm and I even have the right webhook address is the node configuration.

Any idea where to look for?

Thanks in advance!