@andrei-tatar Made some updates to the backend services that resulted in everyone needing to update their tokens. From his Git-Hub site -Nora service dead ? · Issue #49 · andrei-tatar/node-red-contrib-nora · GitHub
You need to update the token in Node-RED with a new one from https://node-red-google-home.herokuapp.com/
Also, you need to unlink NORA (in your Google Home app) and link it again.