We actually had almost the exact same thing happen to Notebook.ai last month:

- automated notice of trademark infringement from some posted user content, accusing us of "fraud and phishing" (filed by a third party on behalf of Meta)

- that user content was immediately deleted upon receiving the notice

- exactly a week later, our host (Heroku) banned our account with a generic no-reason "Your account has been banned."

Total downtime of about 24 hours until it was resolved; luckily, Heroku's support simply unbanned the account whenever I reached out to ask why we were banned. Migrating to another host wouldn't have taken much longer, but would have been a pain.

Goes to show layering a couple automated processes together can have pretty devastating false-positives. I'm glad there was a human in the loop at Heroku I could reach to get things sorted out relatively quickly; also glad to see Itch.io is back up and got it sorted out relatively quickly as well.