I'm not happy to write this review.

I always thought that Leechblock NG was perfect, but yesterday I found out that I can easily disable it by going through the add-on options. Without typing the random password.

I have tried to follow the instructions on this site https://www.proginosko.com/leechblock/faq/
But after hours I didn't solve anything.

I think I'll try "FocusMe" software.