If there are issues with importing then the text instructions definitely aren't being fully replicated, or there might be a clash with something in your existing project. Please make sure you're copying over the parameters in the VisuStella Events Core plugin as well as editing the events to match your game.
I may make a video at some point but it's not a high priority for me right now as the text instructions seem to have worked for others so far, and the project has been available for over 3 years. There is a refund option through itch if you're not able to follow them though.