Is had gotten done correct grammar?

yes

In Canada it is widely considered to be grammatical and in the US it is widely considered (outside of some parts of northern New England) to be incorrect. I'll admit I don't know with certainty what...

In this sentence, a more correct version would be "the war is over" or "the war has ended."

Correct grammar would be (present tense) "are you doing your shopping", or (past tense) "have you done your shopping".

Although the British stopped using the past participle gotten about three hundred years ago, the American colonists and their descendants--especially in New England--still tend to use it. Some...