As was mentioned in discord, you have no Key Maps assigned to your character set. If you have no key maps assigned, then no mapped keys are loaded for the character set, so when you tell it to execute a mapped key, and it looks to see whether one is loaded, the loaded list is empty so it does nothing.
One of the key maps that is normally loaded is the Always On. It is usually the one which includes the Activate Maps toggle which loads/unloads other Key Maps. There is no special magic to this one, because if you remove that one, then you also remove the ability to load/unload other Key Maps.
In your case you've removed all the normal key maps, so are only left with the option of Assigning them to your character set (or characters if you prefer individual assignments), to get them loaded when you start the character set.
To do so, select the Character Set in the top left, in the lower left select Key Maps, and then in the lower right, select and highlight the Key Maps you want to load up and enable with your character set.
Export to InnerSpace to take effect.