My son has been changing the date on his mobile to the more points while gaming. Date on mobile is 19/11. Texts/calls happened 15/11 and are not showing. Please investigate
Some kids changes time/date on the device to circumvent the time limits and daily time allowance. You can see it if the device history data coming with wrong date/time stamp. If you find out that's the case, please add Settings app to the protected app list so the user cannot change date/time.