Apparently Help seems to be missing

I downloaded and installed eM Client 5. Now I am in the evaluation period.

For unknown reasons Help is not loading. I click on it or I press F1 but there is no reaction.

Seems I do some basic error but I cannot figure what.

Please advise me. Thank you.

It should open a webpage in the browser with the following address:…
If it doesn’t, please make sure that any browser is set as a default program for opening a webpage in Default programs dialog in Windows (Control Panel -> Programs -> Default programs -> Set Default programs)