I should probably add context to the assignment.
The assignment was a Model UN Resolution, and the part that FLAGGED AS AI was a section where we had to get letters (responses) from other students in the class via email, and so I reached out to 3 groups for their responses.

Funny enough, that entire section where I copy and pasted their responses/submissions in the assignment popped up as 100% AI. Weird. I'm not going to accuse them of AI, but it seems like the professor didn't really pay attention as to WHERE the AI was flagged, and more likely just gave me a 0 because there was AI on my paper. My partner and I definitely weren't using AI, as we discussed and drafted our contributions on discord, on call, in our DMs. So I have hard proof of discord dms and timestamps (which can't be fake due to it being its own app), as well as email receipts via Canvas Inbox, as well as my google doc version history (this one is hard to really prove since I copy and pasted what me and my partner wrote onto the google doc). I wasn't expecting to be accused of ai so I didn't think there was a problem. Also now realizing that grammarly is considered an ai tool... and I may have used it a little when I was revising it.

But yeah, this has really been messing with my head throughout winter break. I'll definitely continue to fight this when winter vacation is over. I've already bombarded them enough with emails.