Hello Khaine becouse a few day passed i paste my post back to remind you the problem:
After the second time the bug append to my friend i rent a DF server myserlf, and after 2 day the bug occur again... i'm not sure of what log file do you need.
Those are the the server web console info at the moment of the bug:
2021-01-23T13:18:06 19053.742 INF [Steamworks.NET] Authentication callback. ID: 76561198294915916, owner: 76561198294915916, result: k_EAuthSessionResponseAuthTicketCanceled
2021-01-23T13:18:06 19053.742 INF [Steamworks.NET] Kick player for invalid login: 76561198294915916 Ceppo
2021-01-23T13:18:06 19053.743 INF [Auth] Steam authorization failed: EntityID=180, PlayerID='76561198294915916', OwnerID='76561198294915916', PlayerName='Ceppo'
2021-01-23T13:18:06 19053.744 INF Kicking player (Steam auth failed: k_EAuthSessionResponseAuthTicketCanceled): EntityID=180, PlayerID='76561198294915916', OwnerID='76561198294915916', PlayerName='Ceppo'
2021-01-23T13:18:06 19054.247 INF Player set to offline: 76561198294915916
serverlog.log