Sorry, I haven't check EU servers.
To resolve problem:
Close WRobot.
Download wManager.dll and move (and replace) file in folder "\WRobot\Bin\".
Start WRobot again and skip update
Hello, can you read this: https://wrobot.eu/forums/topic/1381-repairinstall-wrobot/#comment-966
If you problem is not resolved, can you share your log file please ( https://wrobot.eu/forums/topic/1779-how-to-post-your-log-file-with-your-topic/ ).