Firmware is on the latest version, router is less than a month old.  Devices connected on wifi are not able to get on internet, they have IP addresses but are not able to ping router.  renewing IP and disabling wifi on devices and reconnecting does not resolve issue.  This is happeniing on 5-9 out of the 18 devices on wifi.  I have set priority in QOS for these devices and same thing.  Only way to fix issue is rebooting router.  I have set router to reboot daily at 3 am but the logs don't show that it rebooted, so every morning I have to reboot the machine for said devices to get to internet.