Ahh okay I see yeah it is the UST my bad, friend!! ^^
The "i" note on the UST looks like it's too long. Try setting its length to either 120 or 60 but also be sure to set the length on the "na" appropriately too or the UST will go off time. So basically whatever you take away from the "i" to get it to 120 or 60? Add to the ""na" to keep the UST on time.
Or...I dunno you could link me to the UST and I could do it for you if you don't understand what I'm saying ;; I'd like you to learn this for other times when you might have this problem~ Just know that the notes need to be big enough to register the sound? But also small enough so that they don't register as a separate syllable.