To effectively debug issues, information from all clients and the server must be collected for a complete picture of what is happening. This can be challenging when all players are not comfortable with logging, enabling configurations, or sending the files to you.
Enable Server Debug Logging writes detailed logs on the server. While Server Sets Debug Logging is also on, every client logs in detail too and sends Discovery Sync's own log lines to the server every 30 seconds, and once more when the player logs off.
The server saves them per character and day in BepInEx\config\DiscoverySync\clientlogs\<world id>\<character>_<platform id>_<date>.log. Only this mod's lines are sent, never the game's or other mods'. They include character names, platform IDs, and what each character discovers or chooses.
Each file is capped at 5 MB per day.