Hi Ad4am106, thank you so much for letting me know about the issue.
It appears that the game engine is not detecting touchpad clicks as valid gesture inputs, and I have fixed it now. An updated version is on the way.
Your solution is brilliant. At the moment, you could also try trackpad mechanical clicks. I tested it on my Windows PC with the current version of the game, and the clicks was detected correctly. I will further improve trackpad support. Please accept my sincere apology for the inconvenience you have experienced.
And I am so grateful for your kind words, it's my privilege to have the chance to show you my work. I hope this small story will give you strength.