I know my password to open my Oasis, but it will not work on my Oasis 9th Generation. I went into my account and cancelled my password and put in a new one. That also did not allow me to open my Kindle. I can access all my books on an iPad ect.. I am thinking of taking this kindle off my account (I have many Kindle accessing devices) and then reinstalling it as my main Kindle. Is that possible? Would you suggest that I do anything else? I think I can erase everything on that malfunctioning Kindle.