Check if the paper White uses 2.4 and or 5Ghz wifi, then if possible set it to about
To add a Wi-Fi network to your Kindle Paperwhite, follow these steps: If necessary, turn on your Kindle Paperwhite. Tap Menu→Settings. From the same screen, tap Wi-Fi Networks. If Wi-Fi is not turned on, you will get a message asking if it should be turned on. ... Select the network to which you want to connect.