Are you trying to do collision with Paper2D sprites? if so are they using 2D or 3D collision? I have not tested collision with sprites yet, but the first thing to check is the CollisionEnabled property on the rope, it is set to No Collision by default. The other thing is that currently the ropes collision is made up of Spheres which means that there are gaps between each Rope BodyInstance. I will be adding the option to have Capsules soon to reduce the gaps but for now you can try increasing the number of segments. And you can Enable Render Debug option to see where each Body is along the rope.
To walk over the rope, I think I need to add an option to disable HitForces for this scenario. I’ll add this to my test case level and will report back. In any case it will be possibly to achieve what you want after I make the changes.