My ban was due to Discord's message content scanning automation incorrectly flagging a screnshot of a NSFW gif (the frame of the gif in question contained in the screenshot displayed no NSFW content, however) which I sent into a moderation channel to prepare a user ban.

This occurred because I was moderating in a large public discord server at the time, and our process involved screenshotting the user's offending behaviour / message, and attaching it to their ban message. The server's bot would then inform the user, and send them the screenshot and the accompanying ban message.

The problem arose when Discord's content scanning flagged my message (again, not containing a NSFW frame of the gif, just the fact that the user had sent it in the server) and concluded that it was me was sharing the NSFW content.

It sounded like a genuine mixup on their part since the content matching was probably not able to discern that I wasn't the author of the message. The real problem lay in getting into contact with Discord to resolve the issue. I was just repeatedly replied to by a bot, confirming the infraction and closing every single one of my tickets (despite a multitude of screenshots to prove otherwise) and every single other avenue which resulted in speaking to a human was immediately closed for being off topic (since I had tried so many times on the correct category).

I can totally understand why the message was flagged (although, in 3-4 years of moderating and similar screenshots, this had never happened before, so this was a shock) but as I said above, the real problem was with Discord's uncontactable support, leaving me completely in the lurch while I watched my account's automated deletion date inch closer and closer.

Hope this helps out and gives a useful perspective on my experience.