I took these exact steps:
1 - Load Teeworlds
2 - click filter tab on right - untick all filter options
3 - Click refresh at the bottom
4 - I wait and nothing happens.

I'm on a wifi network at the moment, and my version is 0.5.2

There is a connect button at the bottom right with
Host Address:
localhost: 8303

above it do I need to connect? and if so if that the correct host address?

thanks again
Chris