If you are using a VPN on your home computer or device, you may need to enable VPN passthrough on the router.
To enable, follow the steps below:
Step 1: Open a web browser and enter http://dlinkrouter.local. or the IP address of your router (http://192.168.0.1) into the address bar.
Step 2: Enter your password and click Log In.
Step 3: Hover over the Features tab and click Firewall.
Step 4: Click Advanced Settings and then enable IPSec (VPN). Click Save. Note if you are using PPTP VPN, also enable PPTP.