I'm sorry about the issue. Is there any error or message when connecting your kindle to your Wi-Fi / wireless network name?
Please type at the box below, then click on the Send button below to communicate with me, so I can help. Thank you,
Can you please press and hold (or slide and hold) the power on / off button / switch on your kindle for about 45 seconds, then turn it back on, then go to the menu Wi-Fi / wireless setting on the kindle and check?