@Daniel_D I noticed the same issue, and have recently upgraded my firmware to see if helps resolve this recent issue (that may be related to child enabling wifi calling on their phone). I'd recommend...

Via Deco app, under HomeCare, Parental Controls, Child, Insights, I've noticed Wi-Fi calling showing the child using 4.0 hours usage (eventually blocking the 4 hour "Time Control" set for all of...