Literally never did what I wanted it to do. I scheduled YouTube to be unblocked 6am to 10pm, and it just blocked all the time! The settings interface was terrible too, it took me forever to figure out how to schedule unblocking at all.

Best extension to avoid distractions by blocking the websites.. I am detoxing myself from social networking platforms..

When it works it's good BUT it occasionally simply resets itself, so any blocked sites are invisibly unblocked.

"this extension is total crap. it blocks the site in firefox, but your router still makes the request."

Not bad to block all the stupid propaganda about the war but it doesn't prevent the sites to appear in the search engines.

I went out to do errands, came back to it, now it works

It can't even do it job

It's really good. But it's not as intuitive as it could be.

Thank you for your extension!!! I hope Mozilla not remove it. They don't have any password to firefox for our protection. I think there is a problem here. If I close the extension and open it again, the addon closes all block sites. Can you fix this?

I wrote a css override to make it more encouraging.
The code below makes the custom message you write look fancier, and removes the discouraging ! sign. I'd much rather block sites gently.
Thank you for such an awesome plugin though.

body {
background-image: url(https://source.unsplash.com/collection/139386/1920x1080/?sig=) !important;
background-repeat: no-repeat;
background-size: cover;

}
h1, table, #exception,#options, #switch,footer,header{
display:none !important;
}
#message {
width: 100%;
text-align: center;
font-size: 5em;
padding: 0 !important;
height: 100%;
display: flex;
align-items: center;
justify-content: center;
font-weight: 100;
background: #222222ba;
margin: 0 !important;
}

This is the best site blocking add-on.

Latest update has stopped the basic functionality from working