Build 19.3.1 - offline contextual help file still available (F1)?

SOLVED

Good morning,

  1. A few versions back I was able to click anywhere within Pastel 50c, press F1 and have (offline) help file open up on the relevant topic.
  2. This stopped working for a few versions (that is F1 no longer worked)
  3. I have just installed Build 19.3.1, as well as the Sage 50c Pastel Accounting Help Document.

Question:
When I push F1, I get taken to the online portal home page. How do I tell Pastel I want to open the installed help file rather?