Apple TV 3rd gen light blinks but remote fails to work

Hi. I’m trying to get my Apple TV remote to do something more than just make the light flash. Tried a reboot of the unit and no change. Tried unsuccessfully to unpair and pair remote no change. We have since updated our WiFi and cannot navigate to the Apple TV settings. Tried plugging unit directly into Ethernet and the unit boots up normally. Nothing I do with the remote seems to do anything on the tv screen. Only the white LED flashes. Tried replacing battery in remote- no different. Tried controlling with remote on my iphoneX and it recognizes the unit, allows you to select but still none of the remote features work. Without a remote I do not know how to check current software version. I’ve spent 2 hours reading similar issues and posts and nothing works.