@Ange2, oh!!! that is news to me - good to be here in the forum to learn of such things, thanks! But where is that graph from? Is it somewhere in Airbnb rules now? Who says the host fees get changed now? I am always careful with such things, too easily a rumor gets big, and all it is is a runmor - but I can be re-educated, and when I see the proof, displayed by Airbnb in their rules, I will most certainly believe it.
Going back to my own listing just now, they have the new guest service fee refund up - but it shows the cancellation policy at 5 days for moderate , as before. Hard to believe that they would change half of it, but not the other half. So that makes me doubt it at this point.
So, to check on this theory about a 4% service fee for moderate cancellation hosts from now on, I checked a booking I just got yesterday - the new rule was in place then, so I expect ithe 4% service fee you are mentioning to be implemented for that booking I just got:
$8 are subtracted as my airbnb fee from a booking of @$263.00 . That is still 3% - and not 4% !
4% would be something like $10.52, rounded up as they are always doing it would be $11..
So at this point I consider all this to be rumors.