Websocket - Status Code: 400 Bad Request

Hi,

For some reason my HA stopped working when I try to access from external network. It worked before and without me makes changes it stops while i’m making login.

After i put my credentials it gets stuck on “Loading data” and I can see this

api/websocket
Request Method:
GET
Status Code:
400 Bad Request

Any clue of what’s happening? Already restarted Pi3, Router, etc…changed Port number and nothing helps…

Regards,
Nuno Silva

Anyone? Already tried switch physical port on router same issue…

Are you using DuckDNS?

Pherhaps using this suggestion