Hi Oscar,
thanks for answer. The Server location is right: See my Logfile:
2021-04-30 12:30:01.653 Debug : ========== AivlaSoft.Efb.Client Version 2.2 (build #126) started ==========
2021-04-30 12:30:01.659 Debug : +++++++ System info +++++++
2021-04-30 12:30:02.959 Debug : CPU = Intel(R) Core(TM) i7-8700K CPU @ 3.70GHz
2021-04-30 12:30:02.961 Debug : SpeedMHz = 3696, BusSpeedMHz = 100, Cores = 6, Threads = 12
2021-04-30 12:30:03.008 Debug : OS = Microsoft Windows 10 Pro / 64-Bit
2021-04-30 12:30:03.008 Debug : Version = 10.0.19042
2021-04-30 12:30:03.008 Debug : OS language = de-DE, Regional settings = de-AT
2021-04-30 12:30:03.009 Debug : Number decimal separator = ','
2021-04-30 12:30:03.010 Debug : Number group separator = '.'
2021-04-30 12:30:03.010 Debug : Process is 64bit
2021-04-30 12:30:03.010 Debug : +++++++ System info +++++++
2021-04-30 12:30:03.062 Debug : Settings loaded from: C:\Users\<username>\Documents\AivlaSoft\EFB2\Client\Settings\clientSettings.txt
2021-04-30 12:30:03.067 Debug : AutoUpdateInterval = 0
2021-04-30 12:30:03.069 Debug : Verify software version ...
2021-04-30 12:30:03.161 Debug : Latest versions read
2021-04-30 12:30:03.164 Debug : Latest version is installed
2021-04-30 12:30:05.276 Debug : IP address of this computer ('MININT-Q4JTT94') is 192.168.x.x
2021-04-30 12:30:05.278 Debug : Server mode is 'local'
2021-04-30 12:30:05.278 Debug : Using IP endpoint 127.0.0.1/57892
2021-04-30 12:30:05.279 Debug : TcpController initialized
2021-04-30 12:30:06.994 Debug : Services started
2021-04-30 12:30:07.001 Debug : Trying to connect to server ...
2021-04-30 12:30:13.002 Debug : Trying to connect to server ... ... (repeated)
2021-04-30 12:32:08.561 Debug : Closing ... (by user)