WRT3200ACM Gremlins 19.07.4 resets to factory

Returned from vacation to find LINKSYS WRT3200ACM reset to the factory code from OpenWrt 19.07.04 installation. Power was shut off with expectation of tropical storm outages.
Installed 21.02.0 with issues. It doesn't show the radios. GUI has no wireless pages. there is no wireless entry in /etc/config.
root password disappears on power cycle, reboot
What can I check?