If my character sheet is open, and I sleep my laptop for a couple of hours (or days), then open it up again, until I refresh the page, the character sheet will not allow me to roll dice.

While I get that you have a new 'shared dice' thing going on, it's kinda frustrating trying to roll dice like I used to, and eventually realising I need to reload the page because it's timed out.  This wasn't a problem when I didn't need to share dice rolls, and still logged rolls successfully.

You need to fix it so that if you're going to make shared dice rolls required, then the page should auto-reconnect to whatever shared service it needs, without requiring refreshes, and most especially without explaining to people why clicking the roll button does nothing.