A problem that we see on occasion the inability to reach devices on the 10.8.0.0/16 Subnet. Devices on the rest of the network work. It is just with this specific subnet that the problem is seen. The reason is simple. PAM's SSL VPN configuration defaults to use this subnet. To resolve this problem change the address configured in this field. In the screen capture below you can see that it has been changed to 188.8.131.52/16.
If you make this change and it still doesn't work please open a Support ticket.