This describes how to configure your Windows 8 device to connect to the Foxpass VPN.
Follow these directions entering in your VPN's PSK and Public IP where appropriate. Then, make the below modification:
In step 11, choose "Unencrypted (PAP)" instead of either of the "Microsoft CHAP" options.
Then modify the Windows registry (add HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\PolicyAgent\ AssumeUDPEncapsulationContextOnSendRule=2) as discussed here.
After that, log in using your Foxpass username and password.