I also have the same problem. I just took new images for my check in instruction and I can't upload any image.
I've tried "taking a photo" "upload for my phone" "edit the image". Nothing happens. Each time, I see the 3 dots, meaning it's working in the background, then it comes back white and the image never uploads.
Me too. I have been trying to add a photo to the check-in instructions since last week for countless times and still returning with a white image. Sent message to Airbnb support and no response on this