Free version keeps timing out.

I used TeamViewer for years to assist family and friends. I have not used it for a couple years, but installed TeamViewer so I can access my home computer when I'm away. When I hit connect, I get a message "Your current TeamViewer plan does not include connections to customized TeamViewer modules. Your session will therefore be terminated after a short time. Please upgrade to a higher plan to use this functionality." It will connect me to the computer, but it times out and stops about 5 minutes later. How do I correct this?

Thanks.