the word una is not at all clear. It sounds more like ena or eeen as opposed to una. I played it back on slow speed dozens of times and still couldn't make out the word una.
Spelling has nothing to do with what we are talking about, it's pronunciation. The words first are listened to and then you type them out. In what universe does the sound eeenah get spelled una? The issue is that the audio doesn't sound anything like the words that are actually correct. It's akin to expecting you to spell out a sentence like "Pie is tasty" but then the audio sounds like "Mud is tasty." If more than one person is having the same issue, then something is clearly amiss.