Question about key bindings

So, I've run into an issue where I have become unable to deny creeps or towers. As in, physically unable to; you see, whenever I hold down the key to deny (which I have set to Q), the cursor displays the red arrow, yet when I go to deny the creep, my hero does nothing even though the creep was deniable.

Has anyone else had this issue or am I overlooking something?

you dont even need to use attack command for denies, i have enabled right click deny.

to do so just right click dota in your steam game list, properties, and type '-console' into launch options.
start the game and put put this into the console that should show on your screen: dota_force_right_click_attack 1

congrats now you can deny by just rightclicking on something.

Alright, that fixed the problem, thanks timm.

But keep in mind that you still need the attack button to deny your tower. Autodenying doesn't apply there.