Hi, you need to use the plugin JS file from the zip file, not the one from the demo. My demos will usually have outdated versions of my plugins since the demos take a lot of effort/time to update and I generally only do it if I feel the update would be 1) difficult to figure out how to use or 2) a major change has been implemented to where the original demo would no longer provide a sufficient understanding of the basic usage of the plugin. Since the interact tool is set up just like the other tools and is quite simple, I figured it didn't warrant an update to the demo. Sorry for any confusion.
You can have it always show the animation regardless of whether it interacts with an event, it's a toggle in the interact tool settings.
There is no button to quickly cycle tools, I can add it to my to-do list for a future update though.