On my server, there are a small number (perhaps less than 10) of players whose "last seen" date is 01/01/1970.   This is an issue because my AutoPurge plugin uses "last seen on" hook to decide whom to purge and whom not to purge.    Any ideas about why this is like that, how to fix it so my players aren't getting purged unneccesarily?  I thought of a theory and wonder if it could explain the cause.   What if players  had the Steam app open, and logged into my server per usual procedure BUT their online status in the Steam app was set to "offline"?  It is possible to still open and play Rust without having your Steam status as Online.   Would that cause my server to not detect their "last seen" date?

Update your Auto Purge and delete the data file, there was an issue with it so that users that have never joined after the plugin update were getting 0 last join as the default value instead of current time.