You have two broadcasts with IS Boxer.

There is keyboard/mouse repeater.
And there is keymaps, which are groups of mapped keys.

If Keymaps are on, then they take precedence over anything else.
If Repeater is on, then you broadcast every key (that is not a hotkey for a mapped key).

Generally, you're best off with Repeater off but Keymaps on.
However, reverse this for things like your password or having them all /dance or /wave.
Or have both off for chatting in guild or BG.

You can change the hotkey for Repeater or Keymap toggling.
In the Control Keymap section of IS Boxer Toolkit.