I am unable to use the new Publish feature. Every time I attempt to publish a map I get the following Publish Error message:
"There was an error publishing, please check your internet connection and try again.
"Response status code does not indicate success: 401 (Unauthorized)."
My internet connection is working and I have a MM Publish account which I can log into. I was trying to publish a map based on a vertical timeline but I encountered the same issue when trying to publish a simple one-topic test map. I was also able to publish successfully when I participated in the MM2018 trial.