Hi there!
I updated the plugin (5.1.0)and added a way for platforms to collide. I also added the below into the help file, explaining how to use it:
♦ Collider Platforms ♦
Collider platforms are ones that can collide with other platforms. This is an additional note tag. This means that any other platform can also be a collider. But honestly, I think it will only play well with the Normal Platforms. And also, be sure to also check the “skip if cannot move” box of movement routes for them.
To apply the Collision feature, just add the event note tag:
<ColliderPlatform:>
It is case-sensitive.