Unless you can find a backdoor into the Plarium database, you can't. Everything is stored on their end. Every so called generator you've seen on youtube and other places are one of two things. An account grabber, or a click/******/buy money generator for a password that doesn't exist for a rar file.
There was a hack out there that could do anything, but the cost for it was $1,000 USD, and it was created by former employee of Plarium. It has since been nullified.