Yes, I have changed the public IP address my network tunnels through. Access restored. However, it was still being actively blocked before it was changed.
EDIT:
Problem still exists. Within minutes of changing my public IP, the connection was lost and the "err_connection_refused" message was returned.
I suspect it's one of TPU's spam filters, though I'm not sure what I doing to trigger it. The fact that I'm not alone in this problem indicates a problem server side.
(I'm currently using a VPN set to login..)
EDIT2:
Just changed the public IP address again on my main network and it was blocked almost instantly. It loaded the front page and then blocked again. This time I was on my Windows 7 system and my Android laptop, so it's not system specific or browser version related. I didn't even try logging in, didn't get the chance. The only thing working is my VPN ATM..
EDIT3:
Tried something else, no joy.
@W1zzard
What's going on?