I'll just make it simple.
Don't mix platform and Physics.
This is a mistake that most new C2 users make when wanting to get both the platformer toolkit and the physics toolkit. The problem is that Physics uses Box2D which is NOT part of the platformer kit. Box2D is it's own API entirely and does not play nice with Platformer.
You can mix them, but the grief it will cause you a lot of grief trying learn the in's and outs of handling both.
If you want Physics. Then you drop Platformer and have your player also a Physics object. You won't get the nice triggers, but it will work the way it should.
If you can sacrifice physics. Then I suggest dropping that.
If you want both. it's going to be a lot of work. The reason for this is because Physics objects shuold be moved by physics controls. So even layering a physics object on the player will be problematic as Platformer would be setting the position of the physics object. This will cause Physics behaviour issues and not a desired effect.