First go to Settings -> Device -> Developer Options and turn on Apps from unknown sources to allow installing the Perfect Privacy VPN Manager.
In the Fire GUI, go to Apps -> Categories -> Utility
Select and install the Downloader application. This will allow you to download files and install packages from any site.
Enter the following URL to download the Perfect Privacy App:
Once the App as finished downloading, choose Install.
Confirm that the VPN Manager will have full network access and choose Install again.
After the App has finished installing, choose Open. If you want to start it later, you can find it in Home -> Your Apps & Games.
After starting the VPN Manager choose a server to connect to.
Enter your Perfect Privacy username and password and choose Save.
When connecting for the first time, you need to confirm the connection request.
When the status shows Connected, the VPN tunnel was successfully established.
Your can verify that the connection is working correctly by visting https://checkip.perfect-privacy.com