I also bought the lifetime plan which worked for some time. Used it not very often as my use case is to access websites with location filters like shops. Now it doesn't connect to any server anymore though the service status is shown green for 3 servers. The app is just showing "Connecting" and nothing happens.
AnonVPN sold lifetime subscriptions, then began reducing # of servers till none were accessible. They do have servers but they set it up so your existing account will no longer work, denying you the lifetime subscription you paid for. They appear to still be in operation and selling new service so it's not that they don't have the ability to provide what was paid for, rather choose not to.
Some servers slow and one or two don't work anymore, but is my daily-always on vpn 4*s, would be 5, but seems they aren't adding any new servers. Win 8.1 here. Don't use mobile (as is 1 device only) but seems to be great so far. I use over VPN Unlimited.