In one of your attempts you added the 1 through 0 keys to the "Always On" Key Map; this Key Map is not disabled by the toggle, so you can't stop it from broadcasting those when the time comes that you want to do that for whatever reason (e.g. when typing in the chat window, you don't necessarily want your other guy casting spells). I would open up the Always On Key Map and remove 1 through 0 from it.
Another thing I would recommend un-doing is in your Repeater Profile you've got "Key repeat enabled" checked under the startup defaults. This setting doesn't synchronize with the broadcasting icon, which is going to show as being off at startup. Also at any time you Export to Inner Space while the game is open, it resets then too.
Other than that, looks fine. You correctly placed 1 through 5 in the Combat Key Map and those should broadcast to all.
So here's a couple questions to keep moving forward:
1. Did you remember to Export to Inner Space after making changes in ISBoxer? If not, Export and try again
2. Do you have Key Maps ON, and Broadcasting OFF? If not, you should.