everything works fine for me. located in central europe, maybe that's the difference? I can load old chats, message colleagues etc.
i guess "just" the MS Teams website has an issue?
it seems that as long as you are logged in (in a desktop client / app on phone), it works. But as soon as you need to authenticate ( client / webbrowser / etc) , it fails.
I have my daily standup at 10:30, so I have enough time to drink water, and do morning rituals before I start to work. Feels good. I don’t know what would be the advantage of going to sleep at 10pm and waking up at 6:45.