Is there anything am doing wrong? One main pc i need to get sorted is running windows 8 home.

I have tried to uninstall it and reinstall it but for some reason it will not show up online. the software installs and the zoho assist icon shows up on the computer by the clock but it will not come online for me to connect to it. I have checked the firewall too (windows one) and its in the allowed list for private and public. 

Anyone got any ideas?

Cheers

Dave