Waerea [Let It Go] lyrics

Hi, Ellen. Of course!

So I did find some missing diacritics here and there, and some minor orthography errors. But it looks good for the most part. I did notice one thing -- the "ng" consonant, which is prevalent in Te Reo isn't found here. And the use of "Aoraki" instead of "Aorangi" or "Rakitūhāhā" instead of "Rangitūhāhā" suggests this is the northern Māori dialect.

Suggested diacritic addition/corrections (sidenotes):
Block 1; Line 1 - Mumura nā te hukapapa i te pō uriuri (I'm assuming the same rule applies in Te Reo as it does in Tongan, but "na" is never used on its own, but usually as a passive suffix. Instead it'll always be "nā" -- ex. The ice [there (from the speaker's vantage point)] glows in the dark night. Also, "pō" (night) is always used; "po" has no meaning on its own, unless (specifically in Tongan) used as poʻuli (dark, night))
B1;L2 - He pā tū taratahi
B1;L4 - Nau ai iho āki kapu keri ai
B2;L2 - Whiri ki tō ake huanui (You need "huanui" from L3 to complete the sentence, and it also rhymes with "tawhiti" from L1)
B2;L3 - He taea whio ana te hou (corrected for orthography)
B3;L2 - Au te puritia anō
B4;L1 - Hai rū kei kao tōrere
B4;L3 - Aoraki matatū ake nei
B5;L2 - Mai tōna turua
B5;L3 - Ka rere i ka tai, ka taui (separated "rere" and "i"; comma needed between "ka tai" and "ka taui")
B5;L4 - Ka ū manawaroa
B6;L1 - Kia kitea e au āku whatu (The possessive "i au/iau" in "Kia kitea i au" doesn't make sense. The singer doesn't really enunciate that part really well, but I suggest this line instead)
B6;L2 - He aha rā kei tua atu ("rā" is always used, "ra" has no meaning)
B7;L2 - Au turuturu te mara tai (separated "mara" and "tai" for orthography)
B7;L4 - Aue kia ora nō ai
B9;L1 - Whakairotia aku kura tipua
B9;L2 - Whakairotia atu ki te rakitūhāhā
B9;L3 - E noho ai au i te āhuru kaka
B9;L5 - Te ona mana
B10;L2 - Au ake i te awatea
B10;L4 - Torotika ki te rā
B11;L3 - Aoraki matatū ake nei

Hope this helps.

Friendly regards!