Oh my god, it isn't the same product but I was the user of a similar thing at an old job I had for 2 years only it was a slider from 1-10. I always chose 1 no matter how productive, happy or driven I felt. I remember that HR called me in because of this and in a round-about way said I can't just keep doing that as it was bringing the whole purpose of the system down. If I didn't want to interact with the system then I should just select a higher value and a few months later, my manager said that I didn't need to use that system any more.
The funny thing is that in my current job, they use something called "Dailybot" or something integrated to google chat where you check-in and once a week, give an emoji between 1-5 about my productivity or something... Unhappy face for me.
What value is this supposed to provide? If you take part, it will be 8-9-10 regardless to "look good" and if you don't take part like me, it drags the entire team to an average of 4-5-6 which is the same as not having the system at all and yields the real outcome of average.