Hi, I'm Nathan.Sorry to hear that you're having trouble with this but I'll do my best to help you.
Do you get a specific error message?
Which model kindle do you have and for how long have you had it?
Do you need more help with this?
If so, simply reply back on this page.
Please note: You have already paid your fee to the site; I'd like to help you and provide value for that fee, but I do need to communicate with you here to do so.