I'd also ask - did you have a Trial of the Professional version previously?
The thing is that if you invoke the program settings window from the tray icon - it is displayed according to the last UI you ran previously. So, if the Enhanced UI was the last started before, the Report file option is not there; if Simple UI was the last one, it's there.
Igor;
No trial previously, see my edit at the end.
I invoked the program settings window from the tray icon.
No user interface was started when invoking Program settings and no user interface had been started before that, but Report file option was not there.
So no Avast at all on the new machine before today.
But Report file option is still there by now.
HL
Edit: Just to avoid confusion.
I used Avast a little time with the 'trial' key that is in the download.
This key was still in use when I missed the 'Report file' option.
No user interface at all was opened when program settings window was invoked from tray icon.
Then I put in my own Home key, ran a scheduled boot time scan and everything was OK.