A few hours ago I purchased an e-book. I was confused about what I was supposed to do to open it and opened it without using my adobe ID. So apparently now I can only use it on this computer and if I reinstall the operating system I won't be allowed to read my book again. I was actually planning on reinstalling my operating system soon, so is there anyway I can unregister this book from this PC and start the process again, linking it to my adobe ID and be allowed to have multiple copies over multiple devices? It was an honest mistake please help.