Very useful! Almost what I was looking for. Options page could be more focussed. It's a lot and I get why some users are put off by it.

When the extension resumes blocking, it only blocks new instances of that url (like in a new tab), but it doesn't block any windows that are already open. This is a bummer. For me, trying keep myself from social media, I want the blocker to kick me out of these pages when it's time to block again.

The list of pause minutes for the context menu doesn't seem to work. If I set 5, 10 I still get all the longer times as well.

Also, I would like to see a password lock to prevent you from unblocking a site easily, but the current master password seems to be there to protect settings from changing. That doesn't seem very useful to me. I want to prevent myself from bypassing the blocking all the time. If it's harder to do it will be less automatic.