Ok it seems there was a compatibility issue with older browsers. That caused the server to crash. It was programmed to reboot automatically. But clients reconnect automatically as well, so it was crashing in a loop
If you can see the 'members viewing this topic' box at the bottom right-hand side of your screen and where it says 'Quick Reply' LiveTopics - Live Chat, that's what it is.
It means you can type something, press reply and you don't have to wait for the page to refresh. Like a real-time conversation.
Ok now everytime I post I get a message my post couldn't be posted, but when I refresh I see all my attempts did get posted
(There's a lot of post in there)