I was given an Oasis for Xmas & registered it on Boxing Day. All books I transferred that were originally on my Paperwhite work perfectly on the Oasis BUT I then set the default device to 'Oasis' and all new books downloaded show only the 'delete' option, not the 'remove from device' option and disappear from 'all' if I use it though they work perfectly if downloaded onto the paperwhite. I tried changing the default device back to 'Paperwhite' and buying a new book. This works perfectly again on the Paperwhite but doesn't appear in 'All' on the Oasis. I went back to the store. It said I had bought the book and go to library but when I tried it still wasn't there. I have tried 'synch' but that doesn't work. I know I can go back to 'orders' and download it that way but I want an Oasis that works properly.
I've had this problem with my Oasis 1, Oasis 2 and Paperwhite 3 since the recent update. I've taken it up with Customer Service and they've escalated the matter but I've heard nothing since the middle of December. I'm hoping that the more people who report this to Customer Service the quicker the software will be updated.