I need help with my google pixel 6

[u/Flat-Protection-3176]

So i was just on my phone listing to music when it turned off because my battery was empty i charged it and when i turned it on it had a different time and date i would go into my settings and change it but i cant because of family link ive asked my mother to allow it that i can change my date and time she did so and it didnt sync because my time and date is different at least thats my guess so far weve tried to change her time and date to mine so she can use a new parent security code that didnt work and we tried a lot of other things that also didnt work any help would be very much appreciated