Error opening the application

I have a problem opening the application. I get the message “Navigation to the webpage was canceled”.
What can be the problem?

Is this the first time your are running Manager on your computer? There can be a few reasons but newer versions of Manager don’t let this happen. I assume you are using version downloaded from this website rather than some outdated version from some 3rd party download website, correct?

I use the version from the website, so it should be right. I’m using it for 3 months now without problems. But now suddenly this problem appears just by starting the application. It’s the desktop version.