Hi @Sally221,
I know this is an old thread but I thought you might find it helpful.
I am currenlty experiencing the difficulties you mention.
I was unaware that my listing had moved from instant book to request to book ( I did have a few request comes through, but they didn't have government ID which is a requirment on my listing, so I didn't twig straight away).
I am stronlgy thinking this is a system error, NOT a punitive measure or a new rule. I recenlty cancelled 2 instant books - both times through airbnb, and both times I was assured there would be no repercussions. One of the cancellations was because of yet another airbnb glitch - blocked out dates - christmas eve and boxing day - were suddenly made available ( and a for a ridiculously low price) adn I got an IB. The trouble seems to have started from around this time. So far 3 calls or messages to airbnb - the big concern is they seem to think they've fixed it, but they haven't. I have to keep telling them they haven't. I'm sure I"ve lost a lot of bookings over this. Very frustrating.
Hope things were sorted your end.
Regards