Экранное время

Good afternoon, I can not understand ... help me figure it out. I have not changed anything in the settings, they are standard. The phone did not work well, I downloaded it - after that I went into screen time. On January 22 and 23, screen time did not work, or rather, the applications used were not fixed. Or rather, the time of use is fixed, but the applications are not written, the safari is not written. After rebooting the phone writes applications again? What's the matter? Why is the history of several days not displayed? Can this be fixed? Photo attached above