Is it okay that they changed the Our Father?

No, I think it actually is the best translation because it communicates the actual reality without having to engage in some kind of theodicy that denies what Christ has said. My point is that you need to read it in the context of the entire sentence which consists of two clauses.

In a way, the can. They can change the translation that is prayed at Mass. This wouldn’t prohibit a person from privately praying any other preferred translation,of course.

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