time limit

Hi, With firmware 380.63_2 on AC88U spin down seems to not working accurate. I have 32400 (9 hours) as value set in Disk spindown idle time (in seconds) field. But after few minutes the HDD spins down and I do not know why it does this so early. I have done even factory reset but it still...

Do any of the routers or mesh networks have time limit controls for user/device? I want to setup time limits for my kids, and allocate daily quotas. [screen time limits] Most of the routers have scheduling and filtering, but not usage limits. Thanks.