Multiplayer issues right now

Hosting a session shows 0 minutes training and 0 minutes quali to others and they can't join the session.
I did host a training however.

Waiting in the lobby and others connect, they can change their car but it doesn't get shown to the host. Host can then start the session, but it only loads for the host.

Any ideas what's going on?

 

Same here and some others too, according to Reddit.
Listen server worked yesterday, doesn't work today. Joining an empty dedicated server works.

 

This didn't work for me either, got disconnected immediately.
I hope it's just a temporary issue with steam or whatever.

 

Here's another one with the same problem./: