New Version 5.15.3 does not start

I just tried to open WinSCP.
The attached windows appears, and in German it says below
"Please donate to activate automatic updates"
Both buttons "Update" and "Close" do not work.
The window closes automatically after a few seconds.

Hello,
after I started my computer new (I know, should have done that first...), everything worked like a charm.
Thanks!
Bernd

Thanks for your report. Can you reproduce the problem? Did you change your Windows screen settings when the problem started? Or maybe you have attached/detached an external monitor?

Hello,
as I said in my second posting, the problem disappeard after I started the computer new.
So I could not reproduce the problem, now everything is ok.
Thank you
Bernd

I understand that.
Can you answer my other questions?