The game uses a Verbcoin interface and I find it hard to believe that an adventure game reviewer couldn't figure that out.
On the other hand, it seems far-fetched that someone goes to the trouble of reviewing games, probably with a sense of conscientiousness and for the sake of quality control, who is then superficious and bad-minded about it.
So the more probable root problem must be that times have changed over the last decade and verbcoins have been buried in oblivion. Contemporary players simply don't expect anything other than fast-clicks for interface any longer, so they click around and “get nowhere” and don't know what to do.
But you're the owner of your page in the games repository. As a simple first remedy, you could add an explanation (something along the lines of “NOTE: Interact with hotspots by clicking AND HOLDING, and a menu with action options will pop up”).
Since attention is a scarce resource nowadays, such an explanation must be very conspicious and near the start in order not to be overlooked.
A better solution would be to prefix the game with an explanatory screen - if you can still find the sources.
However, that would mean recompiling the sources, which might become cumbersome on its own. It might mean having to first install AGS 2.72, then load and save the game in that version, then switch over to AGS 3.4.1 and load/compile it there.
But the advantage would be that it would improve the game automatically, too: Current AGS provides superior installation options for windows mode. If you play the game as it is, the window is quite, quite, quite tiny. Contemporary AGS has zoom modes that are much better suited for large monitors.
Just my 2 pence
