NETGEAR Gateway C6300BD is total **!

I was given the NETGEAR Gateway C6300BD from COX during install. I have to reboot the device about 4 times a day. The following issues are what I get:

- Denial of wireless connection on multiple devices simultaneously.

- Loss of internet connection with no logged reasons.

- Unable to connect to NETGEAR Genie once connected to the router.

All these issues occur at the same time on all devices (three PCs, 2 Dell tablets, 1 Android phone, and 2 iPhones). The current firmware version is V2.04.06. There are no options in the genie to allow me to update the firmware if I wanted to.