"We've detected an issue with your modem" - reboots, then says I need someone to troubleshoot

Always get "We've detected an issue with your modem" when logging into xfinity site. Multiple modem reboots, with no improvement. Site suggests I need someone to troubleshoot. This is an owned  SB6190 - direct connect to coax drop, no splitters, new coax (ie, not likely its me) - last reboot it said "could not update settings" - any thoughts?