Thanks for the direct Fen.
But yes as Fen as said check out the project template I made. I did make some improvements to the edge scrolling mechanic but you should be able to look through it.
Any how in regards to the issue in your original post… You need to make sure that the “Owning Pawn” is of variable type that matches the Pawn Blueprint you want to allow edge scrolling with. If you look in the tutorial on page 10. The top left image shows the variable type I used in relation to the project which was “Pawn_EdgeScrolling” being the pawn blueprint I created. Doing it this way allows you to get and set variables found in that type of blueprint.
Hope that helps.