This was happening to me earlier while I was using the new client on Chrome. I switched from Chrome to Safari and it was fine, but same as you most of my messages weren't showing up. I also tried logging in on mobile and was having the same issue with disconnecting. It was a little odd because it's never happened to me before, but Chrome and the new client are working normally for me again. Not sure why this was happening or how the issue was fixed but I'm not gonna question it haha.