I have spent a lot of time, trying to leave a review for the last guest and after writing all of the details, putting in the "stars" etc, I pushed the thumbs up, then SUBMIT and it would not accept the review and just kept going back to the beginning...grrrrr frustrated!!
IT's another gremlin in the AirBnB platform - its' has a few of these. On a number of occasions we have had the same issue - then a couple of days later it lets you submit the review.