[usage count not agreeing with internet history]

Dear Flood thank you for the help. While creating the screenshots I realized I made a stupid mistake: I compared data related to different days. The reason is, the app stopped sending application usage and internet history exactly two weeks ago as Kaspersky was switched off in Settings/Accessibility

[usage count not agreeing with internet history]

The usage count of my child’s device shows  no usage in time intervals when internet history indicates activity (google searches, visting a video site). At the same time, the total daily usage shows 1 hour while the usage of the Messenger app shows almosr 2 hours on the same day. Can someone explain to me how these symptoms are possible? Many thanks!