We can get the wifi password ***** the mac
To do this
Type Keychain Access into Spotlight search at the top-right menu
In the sidebar, make sure you click on Passwords, then search for the network you want the password ***** and double click on it.
Click on Show Password. Confirm your administrator username and password.
You may be prompted to enter your administrator name and password *****
The Wi-Fi password ***** appear in the text box next to Show Password.
Then use this on the Kindle.
I can also do these steps for you, and have made a request via Additional Services. This is optional, and if you choose to do this, I can, with your permission, remote into your computer while you watch and do all these steps (and deal with any problems that arise during them) for you. Or if you do not choose to take this service, we can continue here. This is no problem at all. Just let me know please.
Else let me know the results please.