Bora had a reportedly 20 hour storm surge over the weekend of Sept 12 from reading postings on another travel board and some hotels were damaged . It will take some time to complete the repairs which is probably why your booking was switched to Tahaa'a. I bet RSSC is trying all alternatives to get you accomodations on Bora. I wouldn't be surprised to see if something does open up at the last minute. Best wishes, vai