Glad to see a replacement for FF57. I noticed though that there does not seem to be a way to add a site to a blocklist if the list is marked as inaccessible during block hours. With the old leechblock I could click the toolbar icon and select "add to list" and pick one. Now, however, clicking the toolbar icon only takes me to a window to set up block lists with no option to add to a list that is locked.

Edit: thanks for the reply! I did see the add-on was labeled as experimental, just wanted to make sure this was noted just in case it was overlooked.