Errors by importing

I purchased today 4.1 version of H2N. I was expecting to normally proceed to the game, when I will be done with importing config and other hands. What I faced was
"System.InvalidOperationException: No players with hands in the database
at Hand2NoteCore.HandDatabaseFunctions.GetMostRelevantPlayerId(HandDatabase database)
at Hand2NoteCore.DatabaseFunctions.GetMostRelevantPlayerId(Database database)
at Hand2NoteCore.ReportDashboardFunctions.GetMainReportDashboard(ReportEnvironment environment)
at Hand2NoteCore.ReportDashboardFunctions.GetInitialReports(ReportEnvironment environment, LastOpenedReportConfig lastOpenedReports)+MoveNext()
at System.Collections.Generic.LargeArrayBuilder1.AddRange(IEnumerable1 items)
at System.Collections.Generic.EnumerableHelpers.ToArray[T](IEnumerable1 source)
at System.Collections.Immutable.ImmutableExtensions.FallbackWrapper1.get_Count()
at System.Collections.Immutable.ImmutableList1.CreateRange(IEnumerable1 items)
at Hand2NoteCore.AppFunctions.LoadReportDashboards(App app, CancellationToken cancellationToken)
at Hand2NoteCore.AppFunctions.LoadReportDashboards(App app)
at Hand2NoteCore.AppFunctions.LoadApplication(ILogger logger, IHudIpcChannel hudIpcChannel, ITableWindowsProvider tableWindowsProvider, Clipboard clipboard, IServiceProvider serviceProvider, AppLoadingObserver observer, LoginResponse loginResponse)"
which pops up every time I launch the programm. I have tried importing config according to the given instructions. The import does not launch, bc it cannot find the required format of files. Then I tried specifically created command "convert h2n 4.0 config ...", which also gave me the same result with the error meantioned above. I even tried to import my hands manually, what also didnt give me any success.
I would like you to fix the issues and prolong the subscription for every day of the issue´s presence.