I feel I was real lucky not signing up for a year of service with Private Internet Service (PIS)! I signed up for just a month so I could see how I like the service. I have 64 bit Ubuntu 16.04 on an encrypted harddrive. It ends up their system would not work for my install. I had to make an unencrypted partition for the PIS client to work on. I also would not be able to use OpenVPN.
Does anyone know of a good VPN that works on an encrypted partition, with Ubuntu and uses OpenVPN as it's protocol?