Newcomer message shown repeatedly for existing players

Newcomer message keeps showing up for players who've already joined earlier all the time. Daily reboots through Rust restart command which should save gracefully. Players appear to be getting saved in the data file just fine. Configuration:

{
  "Chat Avatar": 0,
  "Show Player Avatar": false,
  "Enable Chat Welcome Message": true,
  "Enable Console Welcome Message": true,
  "Enable Join Message": false,
  "Enable Newcomer Join Message": true,
  "Enable Leave Message": false,
  "Enable Rage Quit Message": false,
  "Clear Data On Wipe": true,
  "Log To Console": true
}​

Plugin needs to be marked unmaintained.