You can copy some values directly from the screenshots. Just click on the red items to select values then copy.
Open admin area of your modem.
Go to LAN tab from vertical left menu and set Trust.Zone DNS servers:
DNS 1: 126.96.36.199
DNS 2: 188.8.131.52
Click VPN from left vertical menu then click OpenVPN client tab. This will bring you to the OpenVPN Client Settings page.
Set values as shown in the screenshot and click Apply to save changes.
Click Content modification of Keys and Certificates. and set values as shown in the screenshot. Click Save to save changes.
Change Service state from OFF to ON
Your IP: x.x.x.x · United Kingdom · You are in TRUST.ZONE now! Your real location is hidden!