> It cannot be turned off and you can set it for a specific amount of time
I almost stopped using the app due to the lack of an off button, after my boss asked for some data and I could not get it on time because the website was not on my whitelist.
Luckily, there is a way of turning it off. If you don't want to know it skip the rest of this comment, and otherwise here it is, in case someone needs it: the app uses the local time, so by changing your computer's time forward you can end the block earlier.