@Emily2097 Yes, I've seen plenty of threads in the CC of hosts saying that settings have been changed without their knowledge. Enough threads that it seems like a thing, and definitely worthy of ongoing monitoring.
As to the other issue, AirBnB uses deceptive wording with the terminology of "good track record."
While common sense would have most people interpret that as stated, AirBnB's interpretation is "no negative track record." That means that if a guest doesn't have any negative reviews, or no reviews at all, i.e. NO track record, AirBnB considers that a good track record and allows them to IB.
They make money off of guests booking, so they make it as ridiculously easy as possible, and then the host has to deal with the outcome.