Hi All,
Yes, Airbnb is putting the squeeze on.
For Superhost, this will be anything beyond the April 2018 Evaluation: From 80% 5-Star overall ratings, to a 4.8 overall rating (Basically the same applies to all hosts, not only Superhosts).
So after April 1st, any host with less than 20 reviews a year, can be destroyed by only 1 guest with a very bad 1-star review (or even accidentally giving you a single star, that is).
As it used to be at least 3 'lesser' reviews, when you only had 10 reviews a year.
And as the system is run by the numbers, so are the automated e-mails.
The norm seems to become 4.7 So it looks like it they are trying to 'purify' the offer-base, by 'natural selection' according to their own standards. It's the same with UBER: Every driver falling below a 4.6 will be automatically fired.
Don't worry, there are many other sites, that will happilly take onboard any offered accommodation, that will generate any income.