COMMUNICATION_ERROR Could not connect to server

Tado communication is not working anymore, it just stopped working today, when I changed the router at home and reset wifi settings. I get error “Could not connect to server due to Error calling https://auth.tado.com/oauth/token”. Tried delete all things, uninstall binding, delete home from tado, create new tado account, installing from beginning everything and anyway I get same error. Things file from example:
Bridge tado:home:demo [ username="mail@google.com", password="***" ]

What could have gone wrong? Thanks in advance!

Welcome to the community! Sorry to hear you’re having trouble.

The first thing I would tried is to put openHAB back on your old router/settings to determine if that was the issue. Unfortunately, you’ve changed a lot of other things, which makes troubleshooting much more difficult.

Without knowing anything about your router, I would guess that the new one is blocking communication with Tado. I don’t know how or why that would be the case, but that’s the first place I’d look since nothing had changed with openHAB.