Unable to connect to Hospital system. The system redirects to an agreement page but ny computer just says I am not connected to the internet. Any ideas?

I am a regular patient at a local hospital that provides free internet access to patients AFTER they accept terms and conditions. I have had no problems until recently when instead of redirecting to the systems acceptance page, I started getting a message that I was not conected to thye internet.

This began about 4 weeks ago and continues. I do not have redirect blocked and have tried Safari, Firefox and Google Chrome to no avail. Please give me some ideas.

Thanks,

Jim