Page not available after replacing SSL certificate

I've tried various browsers.

 

 

Interestingly, I've set up the VIP so it is just http, again I can see the traffic flow between my PC and VIP.. HTTP GET / etc

 

But nothing seems to be sent back to the web servers.

 

I can see health monitor traffic from the LTM to the web server and a I can do a curl from the LTM to web server. It's as if the LTM isn't proxying the TCP traffic