This connection is not secure....

This connection is not secure. Logins here could be compromised. THIS IS THE MESSAGE I KEEP GETTING!

I have been using this site I’m trying to log into for 3 years. It’s HB Forums. a golf gaming forum. with thousands of people using it from all over the world. Never had any problems with Ice Dragon before today, it’s let me sign in on numerous occasions.

I can’t see how to get away from Comodo stopping me from signing in.

Is that HB Studios Forum - Index ?

The message is correct, the connection is not secure/encrypted (the URL begins with http rather than https), and it is not wise to enter your username and password over an insecure connection.