At least it is freely downloadable so that we can all look at it. The first thing I checked is the Gloria. It is problematic. There are extra words in it. Even one which changes the meaning.
“And on the earth” - “the” is not in the Missal text.
“Peace to all.” - the Missal text reads “Peace to people of good will.” The meaning here is different. These words are inserted before the actual phrase - and why? To fit the meter?
“Peace to all the people of good will.” Here is the actual phrase, and it’s mangled by “the” again.
“*O *Lord God, heavenly King”; “O Lord God, almighty Father” - the Missal text does not contain “O”. This would imply vocative case - is it in the Latin? It does not matter, it diverges from the official given English translation.
I will point out that this setting uses a refrain/verse structure, and some repetition, things which are controversial but not necessary illicit in themselves. The changing of words is definitely illicit. This music is not “in accordance with the new Roman Missal”, it merely bears a passing resemblance to it. I would not use this Gloria for anything other than perhaps wrapping fish or lining bird cages.