Sad to say, Saskia, just every so often once you get kicked off you won't be able to find a server to get back on. It's rare these days, but it does happen if the system is exceptionally busy with people chatting and all servers are used up.
I've never seen the second two messages myself, but the first is pretty common.
It's unlikely to be anything wrong at your end. All you can really do is keep trying till you get a server or give up and leave it till tomorrow. When you'll probably find it's fine again. Hope so anyway!
Which servers have you been trying? I'm on Paris. Others currently in channel are using Stockholm and London. I'm sure you've tried those, but you never know.
LabRat