For security reasons, there are time limits for viewing each page. You will receive a warning after 25 minutes without doing anything and you will be able to extend your time on the page.
That's what I thought. Still, it is very annoying - I was just coming back from making a tea and found out that your page gave me the boot! By the way, does it matter if I'm currently only receiving Medicare benefits, when I want an estimate?
You can still get an estimate in that case.
But it is just an estimate, right? I mean, not really reliable numbers.