Another user posted about this, so I'm going to add my input for the dev. Something about w10 changed the registry, and I dont know enough about coding to know how to fix it, but I can reproduce the problem.
I can successfully run the app.
I can select which keys I want to remap
I can log out and back in and I notice that something has been changed because NEITHER of the macros I am trying to map are working.
For reference, I am trying to bind the fn+arrow keys (which correspond to change in volume. Lenovo's dumb idea) to f7 and f8. They both worked before w10, as I was running w8.1 but today since the upgrade they have broken.
Any one else experiencing this?