We should be able to use the word "kāua" in place of "kākou". Both are correct
Report it as "My answer should be accepted.)
I interesting that when I acceded to their demand for "kāua" they suddenly acknowledged that both kāua and kākou are correct.
Does "i" work here as a particle, indicating what we're performing an action on? Kind of similar to using at/to e.g. "I'm at home"/"Go to the park"?
'Ae / Yes. This is an object marker.